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Finding the Fourth Proportional to 82,179.84, 113,377.74 and 60,721.32

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Solution

The fourth proportional to 82,179.84, 113,377.74 and 60,721.32 is: 83,772.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,179.84 : 113,377.74 = 60,721.32 : x
  2. Step 2: Convert to fraction form
    82,179.84/113,377.74 = 60,721.32/x
  3. Step 3: Cross multiply
    82,179.84x = 113,377.74 × 60,721.32
  4. Step 4: Simplify right side
    82,179.84x = 6,884,446,031.42
  5. Step 5: Solve for x
    x = 6,884,446,031.42/82,179.84
  6. Step 6: Final answer
    x = 83,772.93

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1.5x scale

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.