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Finding the Fourth Proportional to 157,653.60, 236,626.20 and 78,824.40

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Solution

The fourth proportional to 157,653.60, 236,626.20 and 78,824.40 is: 118,309.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,653.60 : 236,626.20 = 78,824.40 : x
  2. Step 2: Convert to fraction form
    157,653.60/236,626.20 = 78,824.40/x
  3. Step 3: Cross multiply
    157,653.60x = 236,626.20 × 78,824.40
  4. Step 4: Simplify right side
    157,653.60x = 18,651,918,239.28
  5. Step 5: Solve for x
    x = 18,651,918,239.28/157,653.60
  6. Step 6: Final answer
    x = 118,309.50

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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.