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Finding the Fourth Proportional to 573,132.85, 790,930.50 and 315,037.98

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Solution

The fourth proportional to 573,132.85, 790,930.50 and 315,037.98 is: 434,756.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,132.85 : 790,930.50 = 315,037.98 : x
  2. Step 2: Convert to fraction form
    573,132.85/790,930.50 = 315,037.98/x
  3. Step 3: Cross multiply
    573,132.85x = 790,930.50 × 315,037.98
  4. Step 4: Simplify right side
    573,132.85x = 249,173,147,040.39
  5. Step 5: Solve for x
    x = 249,173,147,040.39/573,132.85
  6. Step 6: Final answer
    x = 434,756.35

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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.