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Finding the Fourth Proportional to 693,277.38, 956,720.16 and 387,381.69

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Solution

The fourth proportional to 693,277.38, 956,720.16 and 387,381.69 is: 534,585.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,277.38 : 956,720.16 = 387,381.69 : x
  2. Step 2: Convert to fraction form
    693,277.38/956,720.16 = 387,381.69/x
  3. Step 3: Cross multiply
    693,277.38x = 956,720.16 × 387,381.69
  4. Step 4: Simplify right side
    693,277.38x = 370,615,872,437.87
  5. Step 5: Solve for x
    x = 370,615,872,437.87/693,277.38
  6. Step 6: Final answer
    x = 534,585.27

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Double scale
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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.