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Finding the Fourth Proportional to 77,424.60, 106,855.86 and 45,596.46

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Solution

The fourth proportional to 77,424.60, 106,855.86 and 45,596.46 is: 62,928.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,424.60 : 106,855.86 = 45,596.46 : x
  2. Step 2: Convert to fraction form
    77,424.60/106,855.86 = 45,596.46/x
  3. Step 3: Cross multiply
    77,424.60x = 106,855.86 × 45,596.46
  4. Step 4: Simplify right side
    77,424.60x = 4,872,248,946.26
  5. Step 5: Solve for x
    x = 4,872,248,946.26/77,424.60
  6. Step 6: Final answer
    x = 62,928.95

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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.