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Finding the Fourth Proportional to 157,716.10, 217,619.10 and 89,729.10

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Solution

The fourth proportional to 157,716.10, 217,619.10 and 89,729.10 is: 123,809.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,716.10 : 217,619.10 = 89,729.10 : x
  2. Step 2: Convert to fraction form
    157,716.10/217,619.10 = 89,729.10/x
  3. Step 3: Cross multiply
    157,716.10x = 217,619.10 × 89,729.10
  4. Step 4: Simplify right side
    157,716.10x = 19,526,765,985.81
  5. Step 5: Solve for x
    x = 19,526,765,985.81/157,716.10
  6. Step 6: Final answer
    x = 123,809.59

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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.