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Finding the Fourth Proportional to 516,703.19, 712,964.23 and 287,254.08

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Solution

The fourth proportional to 516,703.19, 712,964.23 and 287,254.08 is: 396,362.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,703.19 : 712,964.23 = 287,254.08 : x
  2. Step 2: Convert to fraction form
    516,703.19/712,964.23 = 287,254.08/x
  3. Step 3: Cross multiply
    516,703.19x = 712,964.23 × 287,254.08
  4. Step 4: Simplify right side
    516,703.19x = 204,801,883,243.42
  5. Step 5: Solve for x
    x = 204,801,883,243.42/516,703.19
  6. Step 6: Final answer
    x = 396,362.73

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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.