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Finding the Fourth Proportional to 94,987.71, 142,488.99 and 31,808.07

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Solution

The fourth proportional to 94,987.71, 142,488.99 and 31,808.07 is: 47,714.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,987.71 : 142,488.99 = 31,808.07 : x
  2. Step 2: Convert to fraction form
    94,987.71/142,488.99 = 31,808.07/x
  3. Step 3: Cross multiply
    94,987.71x = 142,488.99 × 31,808.07
  4. Step 4: Simplify right side
    94,987.71x = 4,532,299,768.15
  5. Step 5: Solve for x
    x = 4,532,299,768.15/94,987.71
  6. Step 6: Final answer
    x = 47,714.59

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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.