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Finding the Fourth Proportional to 127,079.60, 190,619.40 and 69,998.90

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Solution

The fourth proportional to 127,079.60, 190,619.40 and 69,998.90 is: 104,998.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,079.60 : 190,619.40 = 69,998.90 : x
  2. Step 2: Convert to fraction form
    127,079.60/190,619.40 = 69,998.90/x
  3. Step 3: Cross multiply
    127,079.60x = 190,619.40 × 69,998.90
  4. Step 4: Simplify right side
    127,079.60x = 13,343,148,318.66
  5. Step 5: Solve for x
    x = 13,343,148,318.66/127,079.60
  6. Step 6: Final answer
    x = 104,998.35

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Similar ratio
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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.