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Finding the Fourth Proportional to 118,482.84, 163,510.28 and 64,766.68

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Solution

The fourth proportional to 118,482.84, 163,510.28 and 64,766.68 is: 89,380.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,482.84 : 163,510.28 = 64,766.68 : x
  2. Step 2: Convert to fraction form
    118,482.84/163,510.28 = 64,766.68/x
  3. Step 3: Cross multiply
    118,482.84x = 163,510.28 × 64,766.68
  4. Step 4: Simplify right side
    118,482.84x = 10,590,017,981.47
  5. Step 5: Solve for x
    x = 10,590,017,981.47/118,482.84
  6. Step 6: Final answer
    x = 89,380.18

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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.