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Finding the Fourth Proportional to 98,934.30, 136,576.62 and 56,484.63

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Solution

The fourth proportional to 98,934.30, 136,576.62 and 56,484.63 is: 77,975.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,934.30 : 136,576.62 = 56,484.63 : x
  2. Step 2: Convert to fraction form
    98,934.30/136,576.62 = 56,484.63/x
  3. Step 3: Cross multiply
    98,934.30x = 136,576.62 × 56,484.63
  4. Step 4: Simplify right side
    98,934.30x = 7,714,479,847.35
  5. Step 5: Solve for x
    x = 7,714,479,847.35/98,934.30
  6. Step 6: Final answer
    x = 77,975.79

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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.