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Finding the Fourth Proportional to 7,641.59, 10,545.20 and 4,238.58

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Solution

The fourth proportional to 7,641.59, 10,545.20 and 4,238.58 is: 5,849.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,641.59 : 10,545.20 = 4,238.58 : x
  2. Step 2: Convert to fraction form
    7,641.59/10,545.20 = 4,238.58/x
  3. Step 3: Cross multiply
    7,641.59x = 10,545.20 × 4,238.58
  4. Step 4: Simplify right side
    7,641.59x = 44,696,652.62
  5. Step 5: Solve for x
    x = 44,696,652.62/7,641.59
  6. Step 6: Final answer
    x = 5,849.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.