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Finding the Fourth Proportional to 98,794.65, 136,335.24 and 56,353.89

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Solution

The fourth proportional to 98,794.65, 136,335.24 and 56,353.89 is: 77,767.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,794.65 : 136,335.24 = 56,353.89 : x
  2. Step 2: Convert to fraction form
    98,794.65/136,335.24 = 56,353.89/x
  3. Step 3: Cross multiply
    98,794.65x = 136,335.24 × 56,353.89
  4. Step 4: Simplify right side
    98,794.65x = 7,683,021,118.08
  5. Step 5: Solve for x
    x = 7,683,021,118.08/98,794.65
  6. Step 6: Final answer
    x = 77,767.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.