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Finding the Fourth Proportional to 111,370.50, 153,691.32 and 61,070.58

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Solution

The fourth proportional to 111,370.50, 153,691.32 and 61,070.58 is: 84,277.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,370.50 : 153,691.32 = 61,070.58 : x
  2. Step 2: Convert to fraction form
    111,370.50/153,691.32 = 61,070.58/x
  3. Step 3: Cross multiply
    111,370.50x = 153,691.32 × 61,070.58
  4. Step 4: Simplify right side
    111,370.50x = 9,386,018,053.37
  5. Step 5: Solve for x
    x = 9,386,018,053.37/111,370.50
  6. Step 6: Final answer
    x = 84,277.42

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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.