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Finding the Fourth Proportional to 229,070.40, 343,022.40 and 218,572.80

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Solution

The fourth proportional to 229,070.40, 343,022.40 and 218,572.80 is: 327,302.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,070.40 : 343,022.40 = 218,572.80 : x
  2. Step 2: Convert to fraction form
    229,070.40/343,022.40 = 218,572.80/x
  3. Step 3: Cross multiply
    229,070.40x = 343,022.40 × 218,572.80
  4. Step 4: Simplify right side
    229,070.40x = 74,975,366,430.72
  5. Step 5: Solve for x
    x = 74,975,366,430.72/229,070.40
  6. Step 6: Final answer
    x = 327,302.73

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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.