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Finding the Fourth Proportional to 125,362.56, 188,044.48 and 42,257.28

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Solution

The fourth proportional to 125,362.56, 188,044.48 and 42,257.28 is: 63,386.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,362.56 : 188,044.48 = 42,257.28 : x
  2. Step 2: Convert to fraction form
    125,362.56/188,044.48 = 42,257.28/x
  3. Step 3: Cross multiply
    125,362.56x = 188,044.48 × 42,257.28
  4. Step 4: Simplify right side
    125,362.56x = 7,946,248,243.81
  5. Step 5: Solve for x
    x = 7,946,248,243.81/125,362.56
  6. Step 6: Final answer
    x = 63,386.14

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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.