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Finding the Fourth Proportional to 615,203.40, 922,805.10 and 345,054.23

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Solution

The fourth proportional to 615,203.40, 922,805.10 and 345,054.23 is: 517,581.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,203.40 : 922,805.10 = 345,054.23 : x
  2. Step 2: Convert to fraction form
    615,203.40/922,805.10 = 345,054.23/x
  3. Step 3: Cross multiply
    615,203.40x = 922,805.10 × 345,054.23
  4. Step 4: Simplify right side
    615,203.40x = 318,417,803,220.57
  5. Step 5: Solve for x
    x = 318,417,803,220.57/615,203.40
  6. Step 6: Final answer
    x = 517,581.35

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.