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Finding the Fourth Proportional to 141,487, 195,279.79 and 81,098.12

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Solution

The fourth proportional to 141,487, 195,279.79 and 81,098.12 is: 111,931.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,487 : 195,279.79 = 81,098.12 : x
  2. Step 2: Convert to fraction form
    141,487/195,279.79 = 81,098.12/x
  3. Step 3: Cross multiply
    141,487x = 195,279.79 × 81,098.12
  4. Step 4: Simplify right side
    141,487x = 15,836,823,842.99
  5. Step 5: Solve for x
    x = 15,836,823,842.99/141,487
  6. Step 6: Final answer
    x = 111,931.30

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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.