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Finding the Fourth Proportional to 104,686.92, 144,420.30 and 62,221.32

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Solution

The fourth proportional to 104,686.92, 144,420.30 and 62,221.32 is: 85,837.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,686.92 : 144,420.30 = 62,221.32 : x
  2. Step 2: Convert to fraction form
    104,686.92/144,420.30 = 62,221.32/x
  3. Step 3: Cross multiply
    104,686.92x = 144,420.30 × 62,221.32
  4. Step 4: Simplify right side
    104,686.92x = 8,986,021,700.80
  5. Step 5: Solve for x
    x = 8,986,021,700.80/104,686.92
  6. Step 6: Final answer
    x = 85,837.10

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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.