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Finding the Fourth Proportional to 47,066.40, 70,599.60 and 40,505.40

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Solution

The fourth proportional to 47,066.40, 70,599.60 and 40,505.40 is: 60,758.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,066.40 : 70,599.60 = 40,505.40 : x
  2. Step 2: Convert to fraction form
    47,066.40/70,599.60 = 40,505.40/x
  3. Step 3: Cross multiply
    47,066.40x = 70,599.60 × 40,505.40
  4. Step 4: Simplify right side
    47,066.40x = 2,859,665,037.84
  5. Step 5: Solve for x
    x = 2,859,665,037.84/47,066.40
  6. Step 6: Final answer
    x = 60,758.10

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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.