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Finding the Fourth Proportional to 64,829.40, 89,377.92 and 48,627.84

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Solution

The fourth proportional to 64,829.40, 89,377.92 and 48,627.84 is: 67,041.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,829.40 : 89,377.92 = 48,627.84 : x
  2. Step 2: Convert to fraction form
    64,829.40/89,377.92 = 48,627.84/x
  3. Step 3: Cross multiply
    64,829.40x = 89,377.92 × 48,627.84
  4. Step 4: Simplify right side
    64,829.40x = 4,346,255,193.29
  5. Step 5: Solve for x
    x = 4,346,255,193.29/64,829.40
  6. Step 6: Final answer
    x = 67,041.42

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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.