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Finding the Fourth Proportional to 51,432.66, 70,973.72 and 28,767.72

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Solution

The fourth proportional to 51,432.66, 70,973.72 and 28,767.72 is: 39,697.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,432.66 : 70,973.72 = 28,767.72 : x
  2. Step 2: Convert to fraction form
    51,432.66/70,973.72 = 28,767.72/x
  3. Step 3: Cross multiply
    51,432.66x = 70,973.72 × 28,767.72
  4. Step 4: Simplify right side
    51,432.66x = 2,041,752,104.32
  5. Step 5: Solve for x
    x = 2,041,752,104.32/51,432.66
  6. Step 6: Final answer
    x = 39,697.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.