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Finding the Fourth Proportional to 118,173.79, 177,271.69 and 47,079.17

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Solution

The fourth proportional to 118,173.79, 177,271.69 and 47,079.17 is: 70,623.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,173.79 : 177,271.69 = 47,079.17 : x
  2. Step 2: Convert to fraction form
    118,173.79/177,271.69 = 47,079.17/x
  3. Step 3: Cross multiply
    118,173.79x = 177,271.69 × 47,079.17
  4. Step 4: Simplify right side
    118,173.79x = 8,345,804,775.84
  5. Step 5: Solve for x
    x = 8,345,804,775.84/118,173.79
  6. Step 6: Final answer
    x = 70,623.15

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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.