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Finding the Fourth Proportional to 527,400.52, 791,105.72 and 128,044.80

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Solution

The fourth proportional to 527,400.52, 791,105.72 and 128,044.80 is: 192,068.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,400.52 : 791,105.72 = 128,044.80 : x
  2. Step 2: Convert to fraction form
    527,400.52/791,105.72 = 128,044.80/x
  3. Step 3: Cross multiply
    527,400.52x = 791,105.72 × 128,044.80
  4. Step 4: Simplify right side
    527,400.52x = 101,296,973,696.26
  5. Step 5: Solve for x
    x = 101,296,973,696.26/527,400.52
  6. Step 6: Final answer
    x = 192,068.40

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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.