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Finding the Fourth Proportional to 11,124.90, 15,545.70 and 11,124.90

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Solution

The fourth proportional to 11,124.90, 15,545.70 and 11,124.90 is: 15,545.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,124.90 : 15,545.70 = 11,124.90 : x
  2. Step 2: Convert to fraction form
    11,124.90/15,545.70 = 11,124.90/x
  3. Step 3: Cross multiply
    11,124.90x = 15,545.70 × 11,124.90
  4. Step 4: Simplify right side
    11,124.90x = 172,944,357.93
  5. Step 5: Solve for x
    x = 172,944,357.93/11,124.90
  6. Step 6: Final answer
    x = 15,545.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.