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Finding the Fourth Proportional to 687,333.36, 948,855.96 and 615,424.80

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Solution

The fourth proportional to 687,333.36, 948,855.96 and 615,424.80 is: 849,587.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,333.36 : 948,855.96 = 615,424.80 : x
  2. Step 2: Convert to fraction form
    687,333.36/948,855.96 = 615,424.80/x
  3. Step 3: Cross multiply
    687,333.36x = 948,855.96 × 615,424.80
  4. Step 4: Simplify right side
    687,333.36x = 583,949,489,411.81
  5. Step 5: Solve for x
    x = 583,949,489,411.81/687,333.36
  6. Step 6: Final answer
    x = 849,587.00

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Double scale
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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.