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Finding the Fourth Proportional to 111,332.72, 153,648.87 and 61,041.44

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Solution

The fourth proportional to 111,332.72, 153,648.87 and 61,041.44 is: 84,242.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,332.72 : 153,648.87 = 61,041.44 : x
  2. Step 2: Convert to fraction form
    111,332.72/153,648.87 = 61,041.44/x
  3. Step 3: Cross multiply
    111,332.72x = 153,648.87 × 61,041.44
  4. Step 4: Simplify right side
    111,332.72x = 9,378,948,663.29
  5. Step 5: Solve for x
    x = 9,378,948,663.29/111,332.72
  6. Step 6: Final answer
    x = 84,242.52

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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.