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Finding the Fourth Proportional to 141,243.68, 194,929.80 and 80,802.32

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Solution

The fourth proportional to 141,243.68, 194,929.80 and 80,802.32 is: 111,514.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,243.68 : 194,929.80 = 80,802.32 : x
  2. Step 2: Convert to fraction form
    141,243.68/194,929.80 = 80,802.32/x
  3. Step 3: Cross multiply
    141,243.68x = 194,929.80 × 80,802.32
  4. Step 4: Simplify right side
    141,243.68x = 15,750,780,077.14
  5. Step 5: Solve for x
    x = 15,750,780,077.14/141,243.68
  6. Step 6: Final answer
    x = 111,514.94

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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.