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Finding the Fourth Proportional to 157,685.84, 217,609.80 and 89,700.56

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Solution

The fourth proportional to 157,685.84, 217,609.80 and 89,700.56 is: 123,788.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,685.84 : 217,609.80 = 89,700.56 : x
  2. Step 2: Convert to fraction form
    157,685.84/217,609.80 = 89,700.56/x
  3. Step 3: Cross multiply
    157,685.84x = 217,609.80 × 89,700.56
  4. Step 4: Simplify right side
    157,685.84x = 19,519,720,921.49
  5. Step 5: Solve for x
    x = 19,519,720,921.49/157,685.84
  6. Step 6: Final answer
    x = 123,788.67

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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.