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Finding the Fourth Proportional to 964,115.80, 1,447,728.90 and 727,725.40

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Solution

The fourth proportional to 964,115.80, 1,447,728.90 and 727,725.40 is: 1,092,761.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    964,115.80 : 1,447,728.90 = 727,725.40 : x
  2. Step 2: Convert to fraction form
    964,115.80/1,447,728.90 = 727,725.40/x
  3. Step 3: Cross multiply
    964,115.80x = 1,447,728.90 × 727,725.40
  4. Step 4: Simplify right side
    964,115.80x = 1,053,549,092,844.06
  5. Step 5: Solve for x
    x = 1,053,549,092,844.06/964,115.80
  6. Step 6: Final answer
    x = 1,092,761.98

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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.