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Finding the Fourth Proportional to 114,115.68, 157,491.41 and 65,719.19

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Solution

The fourth proportional to 114,115.68, 157,491.41 and 65,719.19 is: 90,699.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,115.68 : 157,491.41 = 65,719.19 : x
  2. Step 2: Convert to fraction form
    114,115.68/157,491.41 = 65,719.19/x
  3. Step 3: Cross multiply
    114,115.68x = 157,491.41 × 65,719.19
  4. Step 4: Simplify right side
    114,115.68x = 10,350,207,962.29
  5. Step 5: Solve for x
    x = 10,350,207,962.29/114,115.68
  6. Step 6: Final answer
    x = 90,699.26

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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.