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Finding the Fourth Proportional to 66,119.64, 99,351.20 and 61,800.20

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Solution

The fourth proportional to 66,119.64, 99,351.20 and 61,800.20 is: 92,860.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,119.64 : 99,351.20 = 61,800.20 : x
  2. Step 2: Convert to fraction form
    66,119.64/99,351.20 = 61,800.20/x
  3. Step 3: Cross multiply
    66,119.64x = 99,351.20 × 61,800.20
  4. Step 4: Simplify right side
    66,119.64x = 6,139,924,030.24
  5. Step 5: Solve for x
    x = 6,139,924,030.24/66,119.64
  6. Step 6: Final answer
    x = 92,860.82

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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.