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Finding the Fourth Proportional to 74,374.66, 102,550.35 and 55,478.98

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Solution

The fourth proportional to 74,374.66, 102,550.35 and 55,478.98 is: 76,496.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,374.66 : 102,550.35 = 55,478.98 : x
  2. Step 2: Convert to fraction form
    74,374.66/102,550.35 = 55,478.98/x
  3. Step 3: Cross multiply
    74,374.66x = 102,550.35 × 55,478.98
  4. Step 4: Simplify right side
    74,374.66x = 5,689,388,816.64
  5. Step 5: Solve for x
    x = 5,689,388,816.64/74,374.66
  6. Step 6: Final answer
    x = 76,496.33

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1.5x scale

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.