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Finding the Fourth Proportional to 29,701.76, 40,987.76 and 16,779.83

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Solution

The fourth proportional to 29,701.76, 40,987.76 and 16,779.83 is: 23,155.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,701.76 : 40,987.76 = 16,779.83 : x
  2. Step 2: Convert to fraction form
    29,701.76/40,987.76 = 16,779.83/x
  3. Step 3: Cross multiply
    29,701.76x = 40,987.76 × 16,779.83
  4. Step 4: Simplify right side
    29,701.76x = 687,767,356.04
  5. Step 5: Solve for x
    x = 687,767,356.04/29,701.76
  6. Step 6: Final answer
    x = 23,155.78

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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.