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Finding the Fourth Proportional to 71,882.15, 99,195.08 and 45,039.16

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Solution

The fourth proportional to 71,882.15, 99,195.08 and 45,039.16 is: 62,152.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,882.15 : 99,195.08 = 45,039.16 : x
  2. Step 2: Convert to fraction form
    71,882.15/99,195.08 = 45,039.16/x
  3. Step 3: Cross multiply
    71,882.15x = 99,195.08 × 45,039.16
  4. Step 4: Simplify right side
    71,882.15x = 4,467,662,943.94
  5. Step 5: Solve for x
    x = 4,467,662,943.94/71,882.15
  6. Step 6: Final answer
    x = 62,152.60

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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.