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Finding the Fourth Proportional to 527,830.48, 791,734.59 and 128,473.48

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Solution

The fourth proportional to 527,830.48, 791,734.59 and 128,473.48 is: 192,707.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,830.48 : 791,734.59 = 128,473.48 : x
  2. Step 2: Convert to fraction form
    527,830.48/791,734.59 = 128,473.48/x
  3. Step 3: Cross multiply
    527,830.48x = 791,734.59 × 128,473.48
  4. Step 4: Simplify right side
    527,830.48x = 101,716,898,013.67
  5. Step 5: Solve for x
    x = 101,716,898,013.67/527,830.48
  6. Step 6: Final answer
    x = 192,707.51

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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.