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Finding the Fourth Proportional to 235,643.10, 353,637.45 and 156,731.10

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Solution

The fourth proportional to 235,643.10, 353,637.45 and 156,731.10 is: 235,211.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,643.10 : 353,637.45 = 156,731.10 : x
  2. Step 2: Convert to fraction form
    235,643.10/353,637.45 = 156,731.10/x
  3. Step 3: Cross multiply
    235,643.10x = 353,637.45 × 156,731.10
  4. Step 4: Simplify right side
    235,643.10x = 55,425,986,539.70
  5. Step 5: Solve for x
    x = 55,425,986,539.70/235,643.10
  6. Step 6: Final answer
    x = 235,211.58

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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.