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Finding the Fourth Proportional to 527,916.80, 791,866.95 and 128,556.90

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Solution

The fourth proportional to 527,916.80, 791,866.95 and 128,556.90 is: 192,833.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,916.80 : 791,866.95 = 128,556.90 : x
  2. Step 2: Convert to fraction form
    527,916.80/791,866.95 = 128,556.90/x
  3. Step 3: Cross multiply
    527,916.80x = 791,866.95 × 128,556.90
  4. Step 4: Simplify right side
    527,916.80x = 101,799,960,304.46
  5. Step 5: Solve for x
    x = 101,799,960,304.46/527,916.80
  6. Step 6: Final answer
    x = 192,833.34

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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.