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Finding the Fourth Proportional to 53,437.30, 79,721.41 and 45,596.50

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Solution

The fourth proportional to 53,437.30, 79,721.41 and 45,596.50 is: 68,023.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,437.30 : 79,721.41 = 45,596.50 : x
  2. Step 2: Convert to fraction form
    53,437.30/79,721.41 = 45,596.50/x
  3. Step 3: Cross multiply
    53,437.30x = 79,721.41 × 45,596.50
  4. Step 4: Simplify right side
    53,437.30x = 3,635,017,271.07
  5. Step 5: Solve for x
    x = 3,635,017,271.07/53,437.30
  6. Step 6: Final answer
    x = 68,023.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.