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Finding the Fourth Proportional to 556,724.40, 768,269.60 and 338,854.16

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Solution

The fourth proportional to 556,724.40, 768,269.60 and 338,854.16 is: 467,612.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,724.40 : 768,269.60 = 338,854.16 : x
  2. Step 2: Convert to fraction form
    556,724.40/768,269.60 = 338,854.16/x
  3. Step 3: Cross multiply
    556,724.40x = 768,269.60 × 338,854.16
  4. Step 4: Simplify right side
    556,724.40x = 260,331,349,961.54
  5. Step 5: Solve for x
    x = 260,331,349,961.54/556,724.40
  6. Step 6: Final answer
    x = 467,612.61

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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.