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Finding the Fourth Proportional to 61,374.63, 91,613.89 and 52,665.51

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Solution

The fourth proportional to 61,374.63, 91,613.89 and 52,665.51 is: 78,613.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,374.63 : 91,613.89 = 52,665.51 : x
  2. Step 2: Convert to fraction form
    61,374.63/91,613.89 = 52,665.51/x
  3. Step 3: Cross multiply
    61,374.63x = 91,613.89 × 52,665.51
  4. Step 4: Simplify right side
    61,374.63x = 4,824,892,108.27
  5. Step 5: Solve for x
    x = 4,824,892,108.27/61,374.63
  6. Step 6: Final answer
    x = 78,613.79

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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.