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Finding the Fourth Proportional to 84,482.66, 126,728.22 and 25,312.70

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Solution

The fourth proportional to 84,482.66, 126,728.22 and 25,312.70 is: 37,970.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,482.66 : 126,728.22 = 25,312.70 : x
  2. Step 2: Convert to fraction form
    84,482.66/126,728.22 = 25,312.70/x
  3. Step 3: Cross multiply
    84,482.66x = 126,728.22 × 25,312.70
  4. Step 4: Simplify right side
    84,482.66x = 3,207,833,414.39
  5. Step 5: Solve for x
    x = 3,207,833,414.39/84,482.66
  6. Step 6: Final answer
    x = 37,970.32

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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.