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Finding the Fourth Proportional to 693,338.08, 956,850.96 and 387,415.36

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Solution

The fourth proportional to 693,338.08, 956,850.96 and 387,415.36 is: 534,658.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,338.08 : 956,850.96 = 387,415.36 : x
  2. Step 2: Convert to fraction form
    693,338.08/956,850.96 = 387,415.36/x
  3. Step 3: Cross multiply
    693,338.08x = 956,850.96 × 387,415.36
  4. Step 4: Simplify right side
    693,338.08x = 370,698,759,134.75
  5. Step 5: Solve for x
    x = 370,698,759,134.75/693,338.08
  6. Step 6: Final answer
    x = 534,658.01

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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.