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Finding the Fourth Proportional to 157,673.60, 236,656.20 and 78,844.40

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Solution

The fourth proportional to 157,673.60, 236,656.20 and 78,844.40 is: 118,339.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,673.60 : 236,656.20 = 78,844.40 : x
  2. Step 2: Convert to fraction form
    157,673.60/236,656.20 = 78,844.40/x
  3. Step 3: Cross multiply
    157,673.60x = 236,656.20 × 78,844.40
  4. Step 4: Simplify right side
    157,673.60x = 18,659,016,095.28
  5. Step 5: Solve for x
    x = 18,659,016,095.28/157,673.60
  6. Step 6: Final answer
    x = 118,339.51

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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.