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Finding the Fourth Proportional to 79,271.60, 118,925.64 and 26,679.68

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Solution

The fourth proportional to 79,271.60, 118,925.64 and 26,679.68 is: 40,025.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,271.60 : 118,925.64 = 26,679.68 : x
  2. Step 2: Convert to fraction form
    79,271.60/118,925.64 = 26,679.68/x
  3. Step 3: Cross multiply
    79,271.60x = 118,925.64 × 26,679.68
  4. Step 4: Simplify right side
    79,271.60x = 3,172,898,019.00
  5. Step 5: Solve for x
    x = 3,172,898,019.00/79,271.60
  6. Step 6: Final answer
    x = 40,025.66

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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.