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Finding the Fourth Proportional to 127,866.60, 191,799.90 and 70,785.90

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Solution

The fourth proportional to 127,866.60, 191,799.90 and 70,785.90 is: 106,178.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,866.60 : 191,799.90 = 70,785.90 : x
  2. Step 2: Convert to fraction form
    127,866.60/191,799.90 = 70,785.90/x
  3. Step 3: Cross multiply
    127,866.60x = 191,799.90 × 70,785.90
  4. Step 4: Simplify right side
    127,866.60x = 13,576,728,541.41
  5. Step 5: Solve for x
    x = 13,576,728,541.41/127,866.60
  6. Step 6: Final answer
    x = 106,178.85

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1.5x scale

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.