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Finding the Fourth Proportional to 316,657.54, 436,988.06 and 171,464.90

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Solution

The fourth proportional to 316,657.54, 436,988.06 and 171,464.90 is: 236,621.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,657.54 : 436,988.06 = 171,464.90 : x
  2. Step 2: Convert to fraction form
    316,657.54/436,988.06 = 171,464.90/x
  3. Step 3: Cross multiply
    316,657.54x = 436,988.06 × 171,464.90
  4. Step 4: Simplify right side
    316,657.54x = 74,928,114,009.09
  5. Step 5: Solve for x
    x = 74,928,114,009.09/316,657.54
  6. Step 6: Final answer
    x = 236,621.92

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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.