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Finding the Fourth Proportional to 654,311.70, 980,949.15 and 358,823.70

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Solution

The fourth proportional to 654,311.70, 980,949.15 and 358,823.70 is: 537,951.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,311.70 : 980,949.15 = 358,823.70 : x
  2. Step 2: Convert to fraction form
    654,311.70/980,949.15 = 358,823.70/x
  3. Step 3: Cross multiply
    654,311.70x = 980,949.15 × 358,823.70
  4. Step 4: Simplify right side
    654,311.70x = 351,987,803,514.86
  5. Step 5: Solve for x
    x = 351,987,803,514.86/654,311.70
  6. Step 6: Final answer
    x = 537,951.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.