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Finding the Fourth Proportional to 71,569.55, 100,066.15 and 71,569.55

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Solution

The fourth proportional to 71,569.55, 100,066.15 and 71,569.55 is: 100,066.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,569.55 : 100,066.15 = 71,569.55 : x
  2. Step 2: Convert to fraction form
    71,569.55/100,066.15 = 71,569.55/x
  3. Step 3: Cross multiply
    71,569.55x = 100,066.15 × 71,569.55
  4. Step 4: Simplify right side
    71,569.55x = 7,161,689,325.73
  5. Step 5: Solve for x
    x = 7,161,689,325.73/71,569.55
  6. Step 6: Final answer
    x = 100,066.15

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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.