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Finding the Fourth Proportional to 118,967.87, 164,113.47 and 70,541.61

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Solution

The fourth proportional to 118,967.87, 164,113.47 and 70,541.61 is: 97,310.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,967.87 : 164,113.47 = 70,541.61 : x
  2. Step 2: Convert to fraction form
    118,967.87/164,113.47 = 70,541.61/x
  3. Step 3: Cross multiply
    118,967.87x = 164,113.47 × 70,541.61
  4. Step 4: Simplify right side
    118,967.87x = 11,576,828,396.49
  5. Step 5: Solve for x
    x = 11,576,828,396.49/118,967.87
  6. Step 6: Final answer
    x = 97,310.55

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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.