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Finding the Fourth Proportional to 262,563.20, 393,326.40 and 157,068.80

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Solution

The fourth proportional to 262,563.20, 393,326.40 and 157,068.80 is: 235,293.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,563.20 : 393,326.40 = 157,068.80 : x
  2. Step 2: Convert to fraction form
    262,563.20/393,326.40 = 157,068.80/x
  3. Step 3: Cross multiply
    262,563.20x = 393,326.40 × 157,068.80
  4. Step 4: Simplify right side
    262,563.20x = 61,779,305,656.32
  5. Step 5: Solve for x
    x = 61,779,305,656.32/262,563.20
  6. Step 6: Final answer
    x = 235,293.09

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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.