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Finding the Fourth Proportional to 108,994.48, 163,424.81 and 42,356.79

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Solution

The fourth proportional to 108,994.48, 163,424.81 and 42,356.79 is: 63,509.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,994.48 : 163,424.81 = 42,356.79 : x
  2. Step 2: Convert to fraction form
    108,994.48/163,424.81 = 42,356.79/x
  3. Step 3: Cross multiply
    108,994.48x = 163,424.81 × 42,356.79
  4. Step 4: Simplify right side
    108,994.48x = 6,922,150,357.96
  5. Step 5: Solve for x
    x = 6,922,150,357.96/108,994.48
  6. Step 6: Final answer
    x = 63,509.18

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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.