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Finding the Fourth Proportional to 84,672.80, 126,970.80 and 32,064.80

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Solution

The fourth proportional to 84,672.80, 126,970.80 and 32,064.80 is: 48,082.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,672.80 : 126,970.80 = 32,064.80 : x
  2. Step 2: Convert to fraction form
    84,672.80/126,970.80 = 32,064.80/x
  3. Step 3: Cross multiply
    84,672.80x = 126,970.80 × 32,064.80
  4. Step 4: Simplify right side
    84,672.80x = 4,071,293,307.84
  5. Step 5: Solve for x
    x = 4,071,293,307.84/84,672.80
  6. Step 6: Final answer
    x = 48,082.66

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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.