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Finding the Fourth Proportional to 527,825.34, 791,726.91 and 128,468.34

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Solution

The fourth proportional to 527,825.34, 791,726.91 and 128,468.34 is: 192,699.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,825.34 : 791,726.91 = 128,468.34 : x
  2. Step 2: Convert to fraction form
    527,825.34/791,726.91 = 128,468.34/x
  3. Step 3: Cross multiply
    527,825.34x = 791,726.91 × 128,468.34
  4. Step 4: Simplify right side
    527,825.34x = 101,711,841,861.03
  5. Step 5: Solve for x
    x = 101,711,841,861.03/527,825.34
  6. Step 6: Final answer
    x = 192,699.81

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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.