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Finding the Fourth Proportional to 358,210.20, 538,481.70 and 253,752.60

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Solution

The fourth proportional to 358,210.20, 538,481.70 and 253,752.60 is: 381,455.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,210.20 : 538,481.70 = 253,752.60 : x
  2. Step 2: Convert to fraction form
    358,210.20/538,481.70 = 253,752.60/x
  3. Step 3: Cross multiply
    358,210.20x = 538,481.70 × 253,752.60
  4. Step 4: Simplify right side
    358,210.20x = 136,641,131,427.42
  5. Step 5: Solve for x
    x = 136,641,131,427.42/358,210.20
  6. Step 6: Final answer
    x = 381,455.17

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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.