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Finding the Fourth Proportional to 57,886.80, 86,830.20 and 48,555.60

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Solution

The fourth proportional to 57,886.80, 86,830.20 and 48,555.60 is: 72,833.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,886.80 : 86,830.20 = 48,555.60 : x
  2. Step 2: Convert to fraction form
    57,886.80/86,830.20 = 48,555.60/x
  3. Step 3: Cross multiply
    57,886.80x = 86,830.20 × 48,555.60
  4. Step 4: Simplify right side
    57,886.80x = 4,216,092,459.12
  5. Step 5: Solve for x
    x = 4,216,092,459.12/57,886.80
  6. Step 6: Final answer
    x = 72,833.40

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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.