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Finding the Fourth Proportional to 316,394.40, 473,900.40 and 245,719.20

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Solution

The fourth proportional to 316,394.40, 473,900.40 and 245,719.20 is: 368,042.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,394.40 : 473,900.40 = 245,719.20 : x
  2. Step 2: Convert to fraction form
    316,394.40/473,900.40 = 245,719.20/x
  3. Step 3: Cross multiply
    316,394.40x = 473,900.40 × 245,719.20
  4. Step 4: Simplify right side
    316,394.40x = 116,446,427,167.68
  5. Step 5: Solve for x
    x = 116,446,427,167.68/316,394.40
  6. Step 6: Final answer
    x = 368,042.00

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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.