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Finding the Fourth Proportional to 118,127.94, 177,256.71 and 47,988.42

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Solution

The fourth proportional to 118,127.94, 177,256.71 and 47,988.42 is: 72,008.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,127.94 : 177,256.71 = 47,988.42 : x
  2. Step 2: Convert to fraction form
    118,127.94/177,256.71 = 47,988.42/x
  3. Step 3: Cross multiply
    118,127.94x = 177,256.71 × 47,988.42
  4. Step 4: Simplify right side
    118,127.94x = 8,506,269,447.30
  5. Step 5: Solve for x
    x = 8,506,269,447.30/118,127.94
  6. Step 6: Final answer
    x = 72,008.95

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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.