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Finding the Fourth Proportional to 149,714.39, 206,640.59 and 98,736.32

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Solution

The fourth proportional to 149,714.39, 206,640.59 and 98,736.32 is: 136,279.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,714.39 : 206,640.59 = 98,736.32 : x
  2. Step 2: Convert to fraction form
    149,714.39/206,640.59 = 98,736.32/x
  3. Step 3: Cross multiply
    149,714.39x = 206,640.59 × 98,736.32
  4. Step 4: Simplify right side
    149,714.39x = 20,402,931,419.23
  5. Step 5: Solve for x
    x = 20,402,931,419.23/149,714.39
  6. Step 6: Final answer
    x = 136,279.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.