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Finding the Fourth Proportional to 562,280.96, 775,966.20 and 307,626.32

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Solution

The fourth proportional to 562,280.96, 775,966.20 and 307,626.32 is: 424,534.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,280.96 : 775,966.20 = 307,626.32 : x
  2. Step 2: Convert to fraction form
    562,280.96/775,966.20 = 307,626.32/x
  3. Step 3: Cross multiply
    562,280.96x = 775,966.20 × 307,626.32
  4. Step 4: Simplify right side
    562,280.96x = 238,707,626,550.38
  5. Step 5: Solve for x
    x = 238,707,626,550.38/562,280.96
  6. Step 6: Final answer
    x = 424,534.43

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Half scale
Find fourth proportional to 1,124,561.92, 1,551,932.40 and 615,252.64
Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.