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Finding the Fourth Proportional to 361,953.84, 499,509.63 and 218,686.17

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Solution

The fourth proportional to 361,953.84, 499,509.63 and 218,686.17 is: 301,794.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,953.84 : 499,509.63 = 218,686.17 : x
  2. Step 2: Convert to fraction form
    361,953.84/499,509.63 = 218,686.17/x
  3. Step 3: Cross multiply
    361,953.84x = 499,509.63 × 218,686.17
  4. Step 4: Simplify right side
    361,953.84x = 109,235,847,862.82
  5. Step 5: Solve for x
    x = 109,235,847,862.82/361,953.84
  6. Step 6: Final answer
    x = 301,794.97

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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.