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Finding the Fourth Proportional to 527,136.76, 790,698.15 and 127,781.14

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Solution

The fourth proportional to 527,136.76, 790,698.15 and 127,781.14 is: 191,670.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,136.76 : 790,698.15 = 127,781.14 : x
  2. Step 2: Convert to fraction form
    527,136.76/790,698.15 = 127,781.14/x
  3. Step 3: Cross multiply
    527,136.76x = 790,698.15 × 127,781.14
  4. Step 4: Simplify right side
    527,136.76x = 101,036,310,363.99
  5. Step 5: Solve for x
    x = 101,036,310,363.99/527,136.76
  6. Step 6: Final answer
    x = 191,670.02

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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.