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Finding the Fourth Proportional to 621,253.94, 931,650.17 and 216,342.17

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Solution

The fourth proportional to 621,253.94, 931,650.17 and 216,342.17 is: 324,432.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,253.94 : 931,650.17 = 216,342.17 : x
  2. Step 2: Convert to fraction form
    621,253.94/931,650.17 = 216,342.17/x
  3. Step 3: Cross multiply
    621,253.94x = 931,650.17 × 216,342.17
  4. Step 4: Simplify right side
    621,253.94x = 201,555,213,718.71
  5. Step 5: Solve for x
    x = 201,555,213,718.71/621,253.94
  6. Step 6: Final answer
    x = 324,432.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.