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Finding the Fourth Proportional to 316,518.57, 436,793.51 and 173,281.01

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Solution

The fourth proportional to 316,518.57, 436,793.51 and 173,281.01 is: 239,126.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,518.57 : 436,793.51 = 173,281.01 : x
  2. Step 2: Convert to fraction form
    316,518.57/436,793.51 = 173,281.01/x
  3. Step 3: Cross multiply
    316,518.57x = 436,793.51 × 173,281.01
  4. Step 4: Simplify right side
    316,518.57x = 75,688,018,823.48
  5. Step 5: Solve for x
    x = 75,688,018,823.48/316,518.57
  6. Step 6: Final answer
    x = 239,126.63

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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.