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Finding the Fourth Proportional to 358,910.19, 538,332.21 and 109,592.19

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Solution

The fourth proportional to 358,910.19, 538,332.21 and 109,592.19 is: 164,378.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,910.19 : 538,332.21 = 109,592.19 : x
  2. Step 2: Convert to fraction form
    358,910.19/538,332.21 = 109,592.19/x
  3. Step 3: Cross multiply
    358,910.19x = 538,332.21 × 109,592.19
  4. Step 4: Simplify right side
    358,910.19x = 58,997,005,841.44
  5. Step 5: Solve for x
    x = 58,997,005,841.44/358,910.19
  6. Step 6: Final answer
    x = 164,378.19

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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.