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Finding the Fourth Proportional to 127,967.70, 178,921.50 and 127,967.70

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Solution

The fourth proportional to 127,967.70, 178,921.50 and 127,967.70 is: 178,921.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,967.70 : 178,921.50 = 127,967.70 : x
  2. Step 2: Convert to fraction form
    127,967.70/178,921.50 = 127,967.70/x
  3. Step 3: Cross multiply
    127,967.70x = 178,921.50 × 127,967.70
  4. Step 4: Simplify right side
    127,967.70x = 22,896,172,835.55
  5. Step 5: Solve for x
    x = 22,896,172,835.55/127,967.70
  6. Step 6: Final answer
    x = 178,921.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.