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Finding the Fourth Proportional to 514,538.68, 772,514.97 and 261,988.85

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Solution

The fourth proportional to 514,538.68, 772,514.97 and 261,988.85 is: 393,343.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,538.68 : 772,514.97 = 261,988.85 : x
  2. Step 2: Convert to fraction form
    514,538.68/772,514.97 = 261,988.85/x
  3. Step 3: Cross multiply
    514,538.68x = 772,514.97 × 261,988.85
  4. Step 4: Simplify right side
    514,538.68x = 202,390,304,735.51
  5. Step 5: Solve for x
    x = 202,390,304,735.51/514,538.68
  6. Step 6: Final answer
    x = 393,343.23

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Similar ratio
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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.