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Finding the Fourth Proportional to 66,054.60, 99,081.90 and 61,000.20

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Solution

The fourth proportional to 66,054.60, 99,081.90 and 61,000.20 is: 91,500.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,054.60 : 99,081.90 = 61,000.20 : x
  2. Step 2: Convert to fraction form
    66,054.60/99,081.90 = 61,000.20/x
  3. Step 3: Cross multiply
    66,054.60x = 99,081.90 × 61,000.20
  4. Step 4: Simplify right side
    66,054.60x = 6,044,015,716.38
  5. Step 5: Solve for x
    x = 6,044,015,716.38/66,054.60
  6. Step 6: Final answer
    x = 91,500.30

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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.