Home / 78,191.28-117,287.04-19,026.60

Finding the Fourth Proportional to 78,191.28, 117,287.04 and 19,026.60

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Solution

The fourth proportional to 78,191.28, 117,287.04 and 19,026.60 is: 28,539.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,191.28 : 117,287.04 = 19,026.60 : x
  2. Step 2: Convert to fraction form
    78,191.28/117,287.04 = 19,026.60/x
  3. Step 3: Cross multiply
    78,191.28x = 117,287.04 × 19,026.60
  4. Step 4: Simplify right side
    78,191.28x = 2,231,573,595.26
  5. Step 5: Solve for x
    x = 2,231,573,595.26/78,191.28
  6. Step 6: Final answer
    x = 28,539.93

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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.