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Finding the Fourth Proportional to 77,470.66, 106,913.01 and 60,674.50

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Solution

The fourth proportional to 77,470.66, 106,913.01 and 60,674.50 is: 83,733.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,470.66 : 106,913.01 = 60,674.50 : x
  2. Step 2: Convert to fraction form
    77,470.66/106,913.01 = 60,674.50/x
  3. Step 3: Cross multiply
    77,470.66x = 106,913.01 × 60,674.50
  4. Step 4: Simplify right side
    77,470.66x = 6,486,893,425.25
  5. Step 5: Solve for x
    x = 6,486,893,425.25/77,470.66
  6. Step 6: Final answer
    x = 83,733.55

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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.