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Finding the Fourth Proportional to 157,134.79, 216,850.90 and 89,154.63

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Solution

The fourth proportional to 157,134.79, 216,850.90 and 89,154.63 is: 123,036.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,134.79 : 216,850.90 = 89,154.63 : x
  2. Step 2: Convert to fraction form
    157,134.79/216,850.90 = 89,154.63/x
  3. Step 3: Cross multiply
    157,134.79x = 216,850.90 × 89,154.63
  4. Step 4: Simplify right side
    157,134.79x = 19,333,261,754.67
  5. Step 5: Solve for x
    x = 19,333,261,754.67/157,134.79
  6. Step 6: Final answer
    x = 123,036.16

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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.