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Finding the Fourth Proportional to 73,114.60, 109,671.90 and 61,839.40

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Solution

The fourth proportional to 73,114.60, 109,671.90 and 61,839.40 is: 92,759.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,114.60 : 109,671.90 = 61,839.40 : x
  2. Step 2: Convert to fraction form
    73,114.60/109,671.90 = 61,839.40/x
  3. Step 3: Cross multiply
    73,114.60x = 109,671.90 × 61,839.40
  4. Step 4: Simplify right side
    73,114.60x = 6,782,044,492.86
  5. Step 5: Solve for x
    x = 6,782,044,492.86/73,114.60
  6. Step 6: Final answer
    x = 92,759.10

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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.