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Finding the Fourth Proportional to 167,970.10, 251,955.15 and 155,139.70

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Solution

The fourth proportional to 167,970.10, 251,955.15 and 155,139.70 is: 232,709.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,970.10 : 251,955.15 = 155,139.70 : x
  2. Step 2: Convert to fraction form
    167,970.10/251,955.15 = 155,139.70/x
  3. Step 3: Cross multiply
    167,970.10x = 251,955.15 × 155,139.70
  4. Step 4: Simplify right side
    167,970.10x = 39,088,246,384.46
  5. Step 5: Solve for x
    x = 39,088,246,384.46/167,970.10
  6. Step 6: Final answer
    x = 232,709.55

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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.