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Finding the Fourth Proportional to 697,332.24, 962,211.96 and 391,424.40

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Solution

The fourth proportional to 697,332.24, 962,211.96 and 391,424.40 is: 540,105.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,332.24 : 962,211.96 = 391,424.40 : x
  2. Step 2: Convert to fraction form
    697,332.24/962,211.96 = 391,424.40/x
  3. Step 3: Cross multiply
    697,332.24x = 962,211.96 × 391,424.40
  4. Step 4: Simplify right side
    697,332.24x = 376,633,239,115.82
  5. Step 5: Solve for x
    x = 376,633,239,115.82/697,332.24
  6. Step 6: Final answer
    x = 540,105.87

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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.