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Finding the Fourth Proportional to 98,793, 136,335.96 and 56,374.92

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Solution

The fourth proportional to 98,793, 136,335.96 and 56,374.92 is: 77,798.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,793 : 136,335.96 = 56,374.92 : x
  2. Step 2: Convert to fraction form
    98,793/136,335.96 = 56,374.92/x
  3. Step 3: Cross multiply
    98,793x = 136,335.96 × 56,374.92
  4. Step 4: Simplify right side
    98,793x = 7,685,928,838.12
  5. Step 5: Solve for x
    x = 7,685,928,838.12/98,793
  6. Step 6: Final answer
    x = 77,798.31

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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.