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Finding the Fourth Proportional to 616,401.40, 923,046.90 and 404,894.20

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Solution

The fourth proportional to 616,401.40, 923,046.90 and 404,894.20 is: 606,319.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,401.40 : 923,046.90 = 404,894.20 : x
  2. Step 2: Convert to fraction form
    616,401.40/923,046.90 = 404,894.20/x
  3. Step 3: Cross multiply
    616,401.40x = 923,046.90 × 404,894.20
  4. Step 4: Simplify right side
    616,401.40x = 373,736,336,137.98
  5. Step 5: Solve for x
    x = 373,736,336,137.98/616,401.40
  6. Step 6: Final answer
    x = 606,319.74

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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.