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Finding the Fourth Proportional to 540,615.26, 745,190.20 and 425,711.63

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Solution

The fourth proportional to 540,615.26, 745,190.20 and 425,711.63 is: 586,805.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,615.26 : 745,190.20 = 425,711.63 : x
  2. Step 2: Convert to fraction form
    540,615.26/745,190.20 = 425,711.63/x
  3. Step 3: Cross multiply
    540,615.26x = 745,190.20 × 425,711.63
  4. Step 4: Simplify right side
    540,615.26x = 317,236,134,702.03
  5. Step 5: Solve for x
    x = 317,236,134,702.03/540,615.26
  6. Step 6: Final answer
    x = 586,805.73

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Double scale
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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.