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Finding the Fourth Proportional to 125,654.40, 188,461.80 and 104,443.32

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Solution

The fourth proportional to 125,654.40, 188,461.80 and 104,443.32 is: 156,648.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,654.40 : 188,461.80 = 104,443.32 : x
  2. Step 2: Convert to fraction form
    125,654.40/188,461.80 = 104,443.32/x
  3. Step 3: Cross multiply
    125,654.40x = 188,461.80 × 104,443.32
  4. Step 4: Simplify right side
    125,654.40x = 19,683,576,085.18
  5. Step 5: Solve for x
    x = 19,683,576,085.18/125,654.40
  6. Step 6: Final answer
    x = 156,648.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.