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Finding the Fourth Proportional to 70,281.66, 96,987.84 and 40,066.02

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Solution

The fourth proportional to 70,281.66, 96,987.84 and 40,066.02 is: 55,290.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,281.66 : 96,987.84 = 40,066.02 : x
  2. Step 2: Convert to fraction form
    70,281.66/96,987.84 = 40,066.02/x
  3. Step 3: Cross multiply
    70,281.66x = 96,987.84 × 40,066.02
  4. Step 4: Simplify right side
    70,281.66x = 3,885,916,737.20
  5. Step 5: Solve for x
    x = 3,885,916,737.20/70,281.66
  6. Step 6: Final answer
    x = 55,290.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.