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Finding the Fourth Proportional to 434,140.80, 651,016.80 and 167,812.80

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Solution

The fourth proportional to 434,140.80, 651,016.80 and 167,812.80 is: 251,644.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,140.80 : 651,016.80 = 167,812.80 : x
  2. Step 2: Convert to fraction form
    434,140.80/651,016.80 = 167,812.80/x
  3. Step 3: Cross multiply
    434,140.80x = 651,016.80 × 167,812.80
  4. Step 4: Simplify right side
    434,140.80x = 109,248,952,055.04
  5. Step 5: Solve for x
    x = 109,248,952,055.04/434,140.80
  6. Step 6: Final answer
    x = 251,644.06

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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.