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Finding the Fourth Proportional to 32,747.80, 49,128.90 and 10,557.40

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Solution

The fourth proportional to 32,747.80, 49,128.90 and 10,557.40 is: 15,838.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,747.80 : 49,128.90 = 10,557.40 : x
  2. Step 2: Convert to fraction form
    32,747.80/49,128.90 = 10,557.40/x
  3. Step 3: Cross multiply
    32,747.80x = 49,128.90 × 10,557.40
  4. Step 4: Simplify right side
    32,747.80x = 518,673,448.86
  5. Step 5: Solve for x
    x = 518,673,448.86/32,747.80
  6. Step 6: Final answer
    x = 15,838.42

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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.