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Finding the Fourth Proportional to 61,256.16, 91,864.80 and 19,693.44

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Solution

The fourth proportional to 61,256.16, 91,864.80 and 19,693.44 is: 29,533.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,256.16 : 91,864.80 = 19,693.44 : x
  2. Step 2: Convert to fraction form
    61,256.16/91,864.80 = 19,693.44/x
  3. Step 3: Cross multiply
    61,256.16x = 91,864.80 × 19,693.44
  4. Step 4: Simplify right side
    61,256.16x = 1,809,133,926.91
  5. Step 5: Solve for x
    x = 1,809,133,926.91/61,256.16
  6. Step 6: Final answer
    x = 29,533.91

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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.