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Finding the Fourth Proportional to 82,805.76, 124,053.12 and 64,247.04

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Solution

The fourth proportional to 82,805.76, 124,053.12 and 64,247.04 is: 96,249.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,805.76 : 124,053.12 = 64,247.04 : x
  2. Step 2: Convert to fraction form
    82,805.76/124,053.12 = 64,247.04/x
  3. Step 3: Cross multiply
    82,805.76x = 124,053.12 × 64,247.04
  4. Step 4: Simplify right side
    82,805.76x = 7,970,045,762.76
  5. Step 5: Solve for x
    x = 7,970,045,762.76/82,805.76
  6. Step 6: Final answer
    x = 96,249.90

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1.5x scale

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.