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Finding the Fourth Proportional to 527,395.25, 791,097.84 and 128,039.54

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Solution

The fourth proportional to 527,395.25, 791,097.84 and 128,039.54 is: 192,060.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,395.25 : 791,097.84 = 128,039.54 : x
  2. Step 2: Convert to fraction form
    527,395.25/791,097.84 = 128,039.54/x
  3. Step 3: Cross multiply
    527,395.25x = 791,097.84 × 128,039.54
  4. Step 4: Simplify right side
    527,395.25x = 101,291,799,573.10
  5. Step 5: Solve for x
    x = 101,291,799,573.10/527,395.25
  6. Step 6: Final answer
    x = 192,060.51

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1.5x scale

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.