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Finding the Fourth Proportional to 516,528.41, 712,805.41 and 290,173.91

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Solution

The fourth proportional to 516,528.41, 712,805.41 and 290,173.91 is: 400,437.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,528.41 : 712,805.41 = 290,173.91 : x
  2. Step 2: Convert to fraction form
    516,528.41/712,805.41 = 290,173.91/x
  3. Step 3: Cross multiply
    516,528.41x = 712,805.41 × 290,173.91
  4. Step 4: Simplify right side
    516,528.41x = 206,837,532,888.85
  5. Step 5: Solve for x
    x = 206,837,532,888.85/516,528.41
  6. Step 6: Final answer
    x = 400,437.86

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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.