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Finding the Fourth Proportional to 659,188.38, 909,687.03 and 387,267.66

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Solution

The fourth proportional to 659,188.38, 909,687.03 and 387,267.66 is: 534,433.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,188.38 : 909,687.03 = 387,267.66 : x
  2. Step 2: Convert to fraction form
    659,188.38/909,687.03 = 387,267.66/x
  3. Step 3: Cross multiply
    659,188.38x = 909,687.03 × 387,267.66
  4. Step 4: Simplify right side
    659,188.38x = 352,292,367,440.45
  5. Step 5: Solve for x
    x = 352,292,367,440.45/659,188.38
  6. Step 6: Final answer
    x = 534,433.52

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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.