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Finding the Fourth Proportional to 559,789.20, 772,510.43 and 318,152.03

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Solution

The fourth proportional to 559,789.20, 772,510.43 and 318,152.03 is: 439,050.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,789.20 : 772,510.43 = 318,152.03 : x
  2. Step 2: Convert to fraction form
    559,789.20/772,510.43 = 318,152.03/x
  3. Step 3: Cross multiply
    559,789.20x = 772,510.43 × 318,152.03
  4. Step 4: Simplify right side
    559,789.20x = 245,775,758,433.50
  5. Step 5: Solve for x
    x = 245,775,758,433.50/559,789.20
  6. Step 6: Final answer
    x = 439,050.55

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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.