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Finding the Fourth Proportional to 368,588.70, 508,668.78 and 207,454.20

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Solution

The fourth proportional to 368,588.70, 508,668.78 and 207,454.20 is: 286,296.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,588.70 : 508,668.78 = 207,454.20 : x
  2. Step 2: Convert to fraction form
    368,588.70/508,668.78 = 207,454.20/x
  3. Step 3: Cross multiply
    368,588.70x = 508,668.78 × 207,454.20
  4. Step 4: Simplify right side
    368,588.70x = 105,525,474,819.88
  5. Step 5: Solve for x
    x = 105,525,474,819.88/368,588.70
  6. Step 6: Final answer
    x = 286,296.01

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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.