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Finding the Fourth Proportional to 697,357.15, 962,367.08 and 391,455.59

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Solution

The fourth proportional to 697,357.15, 962,367.08 and 391,455.59 is: 540,216.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,357.15 : 962,367.08 = 391,455.59 : x
  2. Step 2: Convert to fraction form
    697,357.15/962,367.08 = 391,455.59/x
  3. Step 3: Cross multiply
    697,357.15x = 962,367.08 × 391,455.59
  4. Step 4: Simplify right side
    697,357.15x = 376,723,966,328.86
  5. Step 5: Solve for x
    x = 376,723,966,328.86/697,357.15
  6. Step 6: Final answer
    x = 540,216.68

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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.