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Finding the Fourth Proportional to 123,303.92, 170,158.20 and 66,714.08

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Solution

The fourth proportional to 123,303.92, 170,158.20 and 66,714.08 is: 92,064.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,303.92 : 170,158.20 = 66,714.08 : x
  2. Step 2: Convert to fraction form
    123,303.92/170,158.20 = 66,714.08/x
  3. Step 3: Cross multiply
    123,303.92x = 170,158.20 × 66,714.08
  4. Step 4: Simplify right side
    123,303.92x = 11,351,947,767.46
  5. Step 5: Solve for x
    x = 11,351,947,767.46/123,303.92
  6. Step 6: Final answer
    x = 92,064.78

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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.