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Finding the Fourth Proportional to 111,374.25, 153,703.80 and 61,073.25

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Solution

The fourth proportional to 111,374.25, 153,703.80 and 61,073.25 is: 84,285.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,374.25 : 153,703.80 = 61,073.25 : x
  2. Step 2: Convert to fraction form
    111,374.25/153,703.80 = 61,073.25/x
  3. Step 3: Cross multiply
    111,374.25x = 153,703.80 × 61,073.25
  4. Step 4: Simplify right side
    111,374.25x = 9,387,190,603.35
  5. Step 5: Solve for x
    x = 9,387,190,603.35/111,374.25
  6. Step 6: Final answer
    x = 84,285.11

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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.