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Finding the Fourth Proportional to 312,069.85, 430,667.43 and 176,095.87

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Solution

The fourth proportional to 312,069.85, 430,667.43 and 176,095.87 is: 243,018.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,069.85 : 430,667.43 = 176,095.87 : x
  2. Step 2: Convert to fraction form
    312,069.85/430,667.43 = 176,095.87/x
  3. Step 3: Cross multiply
    312,069.85x = 430,667.43 × 176,095.87
  4. Step 4: Simplify right side
    312,069.85x = 75,838,755,766.51
  5. Step 5: Solve for x
    x = 75,838,755,766.51/312,069.85
  6. Step 6: Final answer
    x = 243,018.53

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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.