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Finding the Fourth Proportional to 123,505.16, 170,437.16 and 66,916.13

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Solution

The fourth proportional to 123,505.16, 170,437.16 and 66,916.13 is: 92,344.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,505.16 : 170,437.16 = 66,916.13 : x
  2. Step 2: Convert to fraction form
    123,505.16/170,437.16 = 66,916.13/x
  3. Step 3: Cross multiply
    123,505.16x = 170,437.16 × 66,916.13
  4. Step 4: Simplify right side
    123,505.16x = 11,404,994,470.50
  5. Step 5: Solve for x
    x = 11,404,994,470.50/123,505.16
  6. Step 6: Final answer
    x = 92,344.28

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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.