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Finding the Fourth Proportional to 52,779.92, 72,836.31 and 28,580.89

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Solution

The fourth proportional to 52,779.92, 72,836.31 and 28,580.89 is: 39,441.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,779.92 : 72,836.31 = 28,580.89 : x
  2. Step 2: Convert to fraction form
    52,779.92/72,836.31 = 28,580.89/x
  3. Step 3: Cross multiply
    52,779.92x = 72,836.31 × 28,580.89
  4. Step 4: Simplify right side
    52,779.92x = 2,081,726,199.93
  5. Step 5: Solve for x
    x = 2,081,726,199.93/52,779.92
  6. Step 6: Final answer
    x = 39,441.63

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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.