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Finding the Fourth Proportional to 718,120.04, 990,641.22 and 548,058.92

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Solution

The fourth proportional to 718,120.04, 990,641.22 and 548,058.92 is: 756,043.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,120.04 : 990,641.22 = 548,058.92 : x
  2. Step 2: Convert to fraction form
    718,120.04/990,641.22 = 548,058.92/x
  3. Step 3: Cross multiply
    718,120.04x = 990,641.22 × 548,058.92
  4. Step 4: Simplify right side
    718,120.04x = 542,929,757,140.68
  5. Step 5: Solve for x
    x = 542,929,757,140.68/718,120.04
  6. Step 6: Final answer
    x = 756,043.18

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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.