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Finding the Fourth Proportional to 61,815.60, 92,766.60 and 26,780.40

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Solution

The fourth proportional to 61,815.60, 92,766.60 and 26,780.40 is: 40,189.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,815.60 : 92,766.60 = 26,780.40 : x
  2. Step 2: Convert to fraction form
    61,815.60/92,766.60 = 26,780.40/x
  3. Step 3: Cross multiply
    61,815.60x = 92,766.60 × 26,780.40
  4. Step 4: Simplify right side
    61,815.60x = 2,484,326,654.64
  5. Step 5: Solve for x
    x = 2,484,326,654.64/61,815.60
  6. Step 6: Final answer
    x = 40,189.32

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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.