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Finding the Fourth Proportional to 111,495.17, 153,863.75 and 60,507.90

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Solution

The fourth proportional to 111,495.17, 153,863.75 and 60,507.90 is: 83,501.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,495.17 : 153,863.75 = 60,507.90 : x
  2. Step 2: Convert to fraction form
    111,495.17/153,863.75 = 60,507.90/x
  3. Step 3: Cross multiply
    111,495.17x = 153,863.75 × 60,507.90
  4. Step 4: Simplify right side
    111,495.17x = 9,309,972,549.89
  5. Step 5: Solve for x
    x = 9,309,972,549.89/111,495.17
  6. Step 6: Final answer
    x = 83,501.13

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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.