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Finding the Fourth Proportional to 52,700.74, 72,725.47 and 28,826.90

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Solution

The fourth proportional to 52,700.74, 72,725.47 and 28,826.90 is: 39,780.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,700.74 : 72,725.47 = 28,826.90 : x
  2. Step 2: Convert to fraction form
    52,700.74/72,725.47 = 28,826.90/x
  3. Step 3: Cross multiply
    52,700.74x = 72,725.47 × 28,826.90
  4. Step 4: Simplify right side
    52,700.74x = 2,096,449,851.14
  5. Step 5: Solve for x
    x = 2,096,449,851.14/52,700.74
  6. Step 6: Final answer
    x = 39,780.27

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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.