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Finding the Fourth Proportional to 157,685.03, 217,603.56 and 89,700.41

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Solution

The fourth proportional to 157,685.03, 217,603.56 and 89,700.41 is: 123,785.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,685.03 : 217,603.56 = 89,700.41 : x
  2. Step 2: Convert to fraction form
    157,685.03/217,603.56 = 89,700.41/x
  3. Step 3: Cross multiply
    157,685.03x = 217,603.56 × 89,700.41
  4. Step 4: Simplify right side
    157,685.03x = 19,519,129,429.85
  5. Step 5: Solve for x
    x = 19,519,129,429.85/157,685.03
  6. Step 6: Final answer
    x = 123,785.56

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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.