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Finding the Fourth Proportional to 61,993.47, 92,900.45 and 42,739.45

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Solution

The fourth proportional to 61,993.47, 92,900.45 and 42,739.45 is: 64,047.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,993.47 : 92,900.45 = 42,739.45 : x
  2. Step 2: Convert to fraction form
    61,993.47/92,900.45 = 42,739.45/x
  3. Step 3: Cross multiply
    61,993.47x = 92,900.45 × 42,739.45
  4. Step 4: Simplify right side
    61,993.47x = 3,970,514,412.94
  5. Step 5: Solve for x
    x = 3,970,514,412.94/61,993.47
  6. Step 6: Final answer
    x = 64,047.30

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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.