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Finding the Fourth Proportional to 124,020.96, 185,878.32 and 57,369.28

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Solution

The fourth proportional to 124,020.96, 185,878.32 and 57,369.28 is: 85,983.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,020.96 : 185,878.32 = 57,369.28 : x
  2. Step 2: Convert to fraction form
    124,020.96/185,878.32 = 57,369.28/x
  3. Step 3: Cross multiply
    124,020.96x = 185,878.32 × 57,369.28
  4. Step 4: Simplify right side
    124,020.96x = 10,663,705,386.01
  5. Step 5: Solve for x
    x = 10,663,705,386.01/124,020.96
  6. Step 6: Final answer
    x = 85,983.09

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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.