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Finding the Fourth Proportional to 480,703.86, 721,000.71 and 125,752.14

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Solution

The fourth proportional to 480,703.86, 721,000.71 and 125,752.14 is: 188,613.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,703.86 : 721,000.71 = 125,752.14 : x
  2. Step 2: Convert to fraction form
    480,703.86/721,000.71 = 125,752.14/x
  3. Step 3: Cross multiply
    480,703.86x = 721,000.71 × 125,752.14
  4. Step 4: Simplify right side
    480,703.86x = 90,667,382,224.02
  5. Step 5: Solve for x
    x = 90,667,382,224.02/480,703.86
  6. Step 6: Final answer
    x = 188,613.80

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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.