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Finding the Fourth Proportional to 516,091.01, 712,181.21 and 286,663.05

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Solution

The fourth proportional to 516,091.01, 712,181.21 and 286,663.05 is: 395,581.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,091.01 : 712,181.21 = 286,663.05 : x
  2. Step 2: Convert to fraction form
    516,091.01/712,181.21 = 286,663.05/x
  3. Step 3: Cross multiply
    516,091.01x = 712,181.21 × 286,663.05
  4. Step 4: Simplify right side
    516,091.01x = 204,156,036,377.98
  5. Step 5: Solve for x
    x = 204,156,036,377.98/516,091.01
  6. Step 6: Final answer
    x = 395,581.47

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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.