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Finding the Fourth Proportional to 141,172.99, 194,819.06 and 77,514.89

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Solution

The fourth proportional to 141,172.99, 194,819.06 and 77,514.89 is: 106,970.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,172.99 : 194,819.06 = 77,514.89 : x
  2. Step 2: Convert to fraction form
    141,172.99/194,819.06 = 77,514.89/x
  3. Step 3: Cross multiply
    141,172.99x = 194,819.06 × 77,514.89
  4. Step 4: Simplify right side
    141,172.99x = 15,101,376,644.13
  5. Step 5: Solve for x
    x = 15,101,376,644.13/141,172.99
  6. Step 6: Final answer
    x = 106,970.72

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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.