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Finding the Fourth Proportional to 111,355.52, 153,669.60 and 61,053.44

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Solution

The fourth proportional to 111,355.52, 153,669.60 and 61,053.44 is: 84,253.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,355.52 : 153,669.60 = 61,053.44 : x
  2. Step 2: Convert to fraction form
    111,355.52/153,669.60 = 61,053.44/x
  3. Step 3: Cross multiply
    111,355.52x = 153,669.60 × 61,053.44
  4. Step 4: Simplify right side
    111,355.52x = 9,382,057,703.42
  5. Step 5: Solve for x
    x = 9,382,057,703.42/111,355.52
  6. Step 6: Final answer
    x = 84,253.19

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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.