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Finding the Fourth Proportional to 109,497.98, 151,052.90 and 70,722.47

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Solution

The fourth proportional to 109,497.98, 151,052.90 and 70,722.47 is: 97,561.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,497.98 : 151,052.90 = 70,722.47 : x
  2. Step 2: Convert to fraction form
    109,497.98/151,052.90 = 70,722.47/x
  3. Step 3: Cross multiply
    109,497.98x = 151,052.90 × 70,722.47
  4. Step 4: Simplify right side
    109,497.98x = 10,682,833,079.79
  5. Step 5: Solve for x
    x = 10,682,833,079.79/109,497.98
  6. Step 6: Final answer
    x = 97,561.92

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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.