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Finding the Fourth Proportional to 130,497.92, 180,087.20 and 70,881.92

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Solution

The fourth proportional to 130,497.92, 180,087.20 and 70,881.92 is: 97,817.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,497.92 : 180,087.20 = 70,881.92 : x
  2. Step 2: Convert to fraction form
    130,497.92/180,087.20 = 70,881.92/x
  3. Step 3: Cross multiply
    130,497.92x = 180,087.20 × 70,881.92
  4. Step 4: Simplify right side
    130,497.92x = 12,764,926,503.42
  5. Step 5: Solve for x
    x = 12,764,926,503.42/130,497.92
  6. Step 6: Final answer
    x = 97,817.09

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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.