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Finding the Fourth Proportional to 42,648.50, 63,972.76 and 11,483.76

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Solution

The fourth proportional to 42,648.50, 63,972.76 and 11,483.76 is: 17,225.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,648.50 : 63,972.76 = 11,483.76 : x
  2. Step 2: Convert to fraction form
    42,648.50/63,972.76 = 11,483.76/x
  3. Step 3: Cross multiply
    42,648.50x = 63,972.76 × 11,483.76
  4. Step 4: Simplify right side
    42,648.50x = 734,647,822.38
  5. Step 5: Solve for x
    x = 734,647,822.38/42,648.50
  6. Step 6: Final answer
    x = 17,225.64

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Similar ratio
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1.5x scale

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.