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Finding the Fourth Proportional to 118,836.94, 163,994.98 and 65,124.07

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Solution

The fourth proportional to 118,836.94, 163,994.98 and 65,124.07 is: 89,871.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,836.94 : 163,994.98 = 65,124.07 : x
  2. Step 2: Convert to fraction form
    118,836.94/163,994.98 = 65,124.07/x
  3. Step 3: Cross multiply
    118,836.94x = 163,994.98 × 65,124.07
  4. Step 4: Simplify right side
    118,836.94x = 10,680,020,557.17
  5. Step 5: Solve for x
    x = 10,680,020,557.17/118,836.94
  6. Step 6: Final answer
    x = 89,871.22

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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.