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Finding the Fourth Proportional to 638,717.58, 881,400.57 and 366,593.94

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Solution

The fourth proportional to 638,717.58, 881,400.57 and 366,593.94 is: 505,882.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,717.58 : 881,400.57 = 366,593.94 : x
  2. Step 2: Convert to fraction form
    638,717.58/881,400.57 = 366,593.94/x
  3. Step 3: Cross multiply
    638,717.58x = 881,400.57 × 366,593.94
  4. Step 4: Simplify right side
    638,717.58x = 323,116,107,674.55
  5. Step 5: Solve for x
    x = 323,116,107,674.55/638,717.58
  6. Step 6: Final answer
    x = 505,882.60

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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.