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Finding the Fourth Proportional to 86,108.68, 129,153.30 and 29,939.32

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Solution

The fourth proportional to 86,108.68, 129,153.30 and 29,939.32 is: 44,905.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,108.68 : 129,153.30 = 29,939.32 : x
  2. Step 2: Convert to fraction form
    86,108.68/129,153.30 = 29,939.32/x
  3. Step 3: Cross multiply
    86,108.68x = 129,153.30 × 29,939.32
  4. Step 4: Simplify right side
    86,108.68x = 3,866,761,977.76
  5. Step 5: Solve for x
    x = 3,866,761,977.76/86,108.68
  6. Step 6: Final answer
    x = 44,905.60

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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.