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Finding the Fourth Proportional to 294,526.40, 406,440.60 and 173,672.78

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Solution

The fourth proportional to 294,526.40, 406,440.60 and 173,672.78 is: 239,665.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,526.40 : 406,440.60 = 173,672.78 : x
  2. Step 2: Convert to fraction form
    294,526.40/406,440.60 = 173,672.78/x
  3. Step 3: Cross multiply
    294,526.40x = 406,440.60 × 173,672.78
  4. Step 4: Simplify right side
    294,526.40x = 70,587,668,906.87
  5. Step 5: Solve for x
    x = 70,587,668,906.87/294,526.40
  6. Step 6: Final answer
    x = 239,665.00

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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.