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Finding the Fourth Proportional to 693,682.36, 957,403.47 and 403,383.76

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Solution

The fourth proportional to 693,682.36, 957,403.47 and 403,383.76 is: 556,740.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,682.36 : 957,403.47 = 403,383.76 : x
  2. Step 2: Convert to fraction form
    693,682.36/957,403.47 = 403,383.76/x
  3. Step 3: Cross multiply
    693,682.36x = 957,403.47 × 403,383.76
  4. Step 4: Simplify right side
    693,682.36x = 386,201,011,565.65
  5. Step 5: Solve for x
    x = 386,201,011,565.65/693,682.36
  6. Step 6: Final answer
    x = 556,740.42

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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.