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Finding the Fourth Proportional to 693,387.34, 956,869.81 and 387,464.48

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Solution

The fourth proportional to 693,387.34, 956,869.81 and 387,464.48 is: 534,698.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,387.34 : 956,869.81 = 387,464.48 : x
  2. Step 2: Convert to fraction form
    693,387.34/956,869.81 = 387,464.48/x
  3. Step 3: Cross multiply
    693,387.34x = 956,869.81 × 387,464.48
  4. Step 4: Simplify right side
    693,387.34x = 370,753,061,194.60
  5. Step 5: Solve for x
    x = 370,753,061,194.60/693,387.34
  6. Step 6: Final answer
    x = 534,698.34

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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.