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Finding the Fourth Proportional to 72,988.18, 109,486.17 and 23,064.48

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Solution

The fourth proportional to 72,988.18, 109,486.17 and 23,064.48 is: 34,597.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,988.18 : 109,486.17 = 23,064.48 : x
  2. Step 2: Convert to fraction form
    72,988.18/109,486.17 = 23,064.48/x
  3. Step 3: Cross multiply
    72,988.18x = 109,486.17 × 23,064.48
  4. Step 4: Simplify right side
    72,988.18x = 2,525,241,460.81
  5. Step 5: Solve for x
    x = 2,525,241,460.81/72,988.18
  6. Step 6: Final answer
    x = 34,597.95

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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.