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Finding the Fourth Proportional to 91,009.72, 136,449.88 and 34,802.48

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Solution

The fourth proportional to 91,009.72, 136,449.88 and 34,802.48 is: 52,178.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,009.72 : 136,449.88 = 34,802.48 : x
  2. Step 2: Convert to fraction form
    91,009.72/136,449.88 = 34,802.48/x
  3. Step 3: Cross multiply
    91,009.72x = 136,449.88 × 34,802.48
  4. Step 4: Simplify right side
    91,009.72x = 4,748,794,219.70
  5. Step 5: Solve for x
    x = 4,748,794,219.70/91,009.72
  6. Step 6: Final answer
    x = 52,178.98

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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.