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Finding the Fourth Proportional to 312,087.30, 466,964.55 and 207,111.30

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Solution

The fourth proportional to 312,087.30, 466,964.55 and 207,111.30 is: 309,892.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,087.30 : 466,964.55 = 207,111.30 : x
  2. Step 2: Convert to fraction form
    312,087.30/466,964.55 = 207,111.30/x
  3. Step 3: Cross multiply
    312,087.30x = 466,964.55 × 207,111.30
  4. Step 4: Simplify right side
    312,087.30x = 96,713,635,004.42
  5. Step 5: Solve for x
    x = 96,713,635,004.42/312,087.30
  6. Step 6: Final answer
    x = 309,892.89

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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.