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Finding the Fourth Proportional to 687,804.81, 947,609.30 and 532,221.17

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Solution

The fourth proportional to 687,804.81, 947,609.30 and 532,221.17 is: 733,257.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,804.81 : 947,609.30 = 532,221.17 : x
  2. Step 2: Convert to fraction form
    687,804.81/947,609.30 = 532,221.17/x
  3. Step 3: Cross multiply
    687,804.81x = 947,609.30 × 532,221.17
  4. Step 4: Simplify right side
    687,804.81x = 504,337,723,947.64
  5. Step 5: Solve for x
    x = 504,337,723,947.64/687,804.81
  6. Step 6: Final answer
    x = 733,257.05

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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.