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Finding the Fourth Proportional to 615,246.40, 922,869.60 and 465,947.20

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Solution

The fourth proportional to 615,246.40, 922,869.60 and 465,947.20 is: 698,920.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,246.40 : 922,869.60 = 465,947.20 : x
  2. Step 2: Convert to fraction form
    615,246.40/922,869.60 = 465,947.20/x
  3. Step 3: Cross multiply
    615,246.40x = 922,869.60 × 465,947.20
  4. Step 4: Simplify right side
    615,246.40x = 430,008,506,085.12
  5. Step 5: Solve for x
    x = 430,008,506,085.12/615,246.40
  6. Step 6: Final answer
    x = 698,920.80

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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.