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Finding the Fourth Proportional to 691,594.56, 954,429.66 and 389,788.56

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Solution

The fourth proportional to 691,594.56, 954,429.66 and 389,788.56 is: 537,924.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,594.56 : 954,429.66 = 389,788.56 : x
  2. Step 2: Convert to fraction form
    691,594.56/954,429.66 = 389,788.56/x
  3. Step 3: Cross multiply
    691,594.56x = 954,429.66 × 389,788.56
  4. Step 4: Simplify right side
    691,594.56x = 372,025,762,792.69
  5. Step 5: Solve for x
    x = 372,025,762,792.69/691,594.56
  6. Step 6: Final answer
    x = 537,924.65

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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.