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Finding the Fourth Proportional to 697,135.60, 961,954.96 and 391,200.24

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Solution

The fourth proportional to 697,135.60, 961,954.96 and 391,200.24 is: 539,804.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,135.60 : 961,954.96 = 391,200.24 : x
  2. Step 2: Convert to fraction form
    697,135.60/961,954.96 = 391,200.24/x
  3. Step 3: Cross multiply
    697,135.60x = 961,954.96 × 391,200.24
  4. Step 4: Simplify right side
    697,135.60x = 376,317,011,221.19
  5. Step 5: Solve for x
    x = 376,317,011,221.19/697,135.60
  6. Step 6: Final answer
    x = 539,804.61

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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.