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Finding the Fourth Proportional to 621,882.36, 858,187.61 and 349,950.11

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Solution

The fourth proportional to 621,882.36, 858,187.61 and 349,950.11 is: 482,925.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,882.36 : 858,187.61 = 349,950.11 : x
  2. Step 2: Convert to fraction form
    621,882.36/858,187.61 = 349,950.11/x
  3. Step 3: Cross multiply
    621,882.36x = 858,187.61 × 349,950.11
  4. Step 4: Simplify right side
    621,882.36x = 300,322,842,479.45
  5. Step 5: Solve for x
    x = 300,322,842,479.45/621,882.36
  6. Step 6: Final answer
    x = 482,925.49

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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.