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Finding the Fourth Proportional to 717,374.80, 990,084.86 and 545,009.13

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Solution

The fourth proportional to 717,374.80, 990,084.86 and 545,009.13 is: 752,194.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,374.80 : 990,084.86 = 545,009.13 : x
  2. Step 2: Convert to fraction form
    717,374.80/990,084.86 = 545,009.13/x
  3. Step 3: Cross multiply
    717,374.80x = 990,084.86 × 545,009.13
  4. Step 4: Simplify right side
    717,374.80x = 539,605,288,174.77
  5. Step 5: Solve for x
    x = 539,605,288,174.77/717,374.80
  6. Step 6: Final answer
    x = 752,194.37

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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.