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Finding the Fourth Proportional to 688,503.34, 950,156.04 and 378,400.33

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Solution

The fourth proportional to 688,503.34, 950,156.04 and 378,400.33 is: 522,204.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,503.34 : 950,156.04 = 378,400.33 : x
  2. Step 2: Convert to fraction form
    688,503.34/950,156.04 = 378,400.33/x
  3. Step 3: Cross multiply
    688,503.34x = 950,156.04 × 378,400.33
  4. Step 4: Simplify right side
    688,503.34x = 359,539,359,087.49
  5. Step 5: Solve for x
    x = 359,539,359,087.49/688,503.34
  6. Step 6: Final answer
    x = 522,204.23

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Similar ratio
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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.