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Finding the Fourth Proportional to 111,148.89, 153,385.47 and 60,847.89

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Solution

The fourth proportional to 111,148.89, 153,385.47 and 60,847.89 is: 83,970.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,148.89 : 153,385.47 = 60,847.89 : x
  2. Step 2: Convert to fraction form
    111,148.89/153,385.47 = 60,847.89/x
  3. Step 3: Cross multiply
    111,148.89x = 153,385.47 × 60,847.89
  4. Step 4: Simplify right side
    111,148.89x = 9,333,182,206.16
  5. Step 5: Solve for x
    x = 9,333,182,206.16/111,148.89
  6. Step 6: Final answer
    x = 83,970.09

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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.