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Finding the Fourth Proportional to 355,278.80, 532,043.40 and 168,071.60

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Solution

The fourth proportional to 355,278.80, 532,043.40 and 168,071.60 is: 251,693.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,278.80 : 532,043.40 = 168,071.60 : x
  2. Step 2: Convert to fraction form
    355,278.80/532,043.40 = 168,071.60/x
  3. Step 3: Cross multiply
    355,278.80x = 532,043.40 × 168,071.60
  4. Step 4: Simplify right side
    355,278.80x = 89,421,385,507.44
  5. Step 5: Solve for x
    x = 89,421,385,507.44/355,278.80
  6. Step 6: Final answer
    x = 251,693.56

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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.