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Finding the Fourth Proportional to 71,006.51, 97,989.51 and 39,176.55

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Solution

The fourth proportional to 71,006.51, 97,989.51 and 39,176.55 is: 54,063.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,006.51 : 97,989.51 = 39,176.55 : x
  2. Step 2: Convert to fraction form
    71,006.51/97,989.51 = 39,176.55/x
  3. Step 3: Cross multiply
    71,006.51x = 97,989.51 × 39,176.55
  4. Step 4: Simplify right side
    71,006.51x = 3,838,890,937.99
  5. Step 5: Solve for x
    x = 3,838,890,937.99/71,006.51
  6. Step 6: Final answer
    x = 54,063.93

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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.