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Finding the Fourth Proportional to 174,638.62, 261,959.76 and 139,799.74

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Solution

The fourth proportional to 174,638.62, 261,959.76 and 139,799.74 is: 209,701.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,638.62 : 261,959.76 = 139,799.74 : x
  2. Step 2: Convert to fraction form
    174,638.62/261,959.76 = 139,799.74/x
  3. Step 3: Cross multiply
    174,638.62x = 261,959.76 × 139,799.74
  4. Step 4: Simplify right side
    174,638.62x = 36,621,906,338.46
  5. Step 5: Solve for x
    x = 36,621,906,338.46/174,638.62
  6. Step 6: Final answer
    x = 209,701.07

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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.