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Finding the Fourth Proportional to 633,429.02, 873,800.79 and 391,634.30

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Solution

The fourth proportional to 633,429.02, 873,800.79 and 391,634.30 is: 540,250.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,429.02 : 873,800.79 = 391,634.30 : x
  2. Step 2: Convert to fraction form
    633,429.02/873,800.79 = 391,634.30/x
  3. Step 3: Cross multiply
    633,429.02x = 873,800.79 × 391,634.30
  4. Step 4: Simplify right side
    633,429.02x = 342,210,360,731.10
  5. Step 5: Solve for x
    x = 342,210,360,731.10/633,429.02
  6. Step 6: Final answer
    x = 540,250.53

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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.