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Finding the Fourth Proportional to 55,759.64, 83,590.16 and 42,670.44

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Solution

The fourth proportional to 55,759.64, 83,590.16 and 42,670.44 is: 63,967.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,759.64 : 83,590.16 = 42,670.44 : x
  2. Step 2: Convert to fraction form
    55,759.64/83,590.16 = 42,670.44/x
  3. Step 3: Cross multiply
    55,759.64x = 83,590.16 × 42,670.44
  4. Step 4: Simplify right side
    55,759.64x = 3,566,828,906.87
  5. Step 5: Solve for x
    x = 3,566,828,906.87/55,759.64
  6. Step 6: Final answer
    x = 63,967.93

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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.