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Finding the Fourth Proportional to 74,488.96, 102,795.84 and 40,956.16

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Solution

The fourth proportional to 74,488.96, 102,795.84 and 40,956.16 is: 56,520.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,488.96 : 102,795.84 = 40,956.16 : x
  2. Step 2: Convert to fraction form
    74,488.96/102,795.84 = 40,956.16/x
  3. Step 3: Cross multiply
    74,488.96x = 102,795.84 × 40,956.16
  4. Step 4: Simplify right side
    74,488.96x = 4,210,122,870.37
  5. Step 5: Solve for x
    x = 4,210,122,870.37/74,488.96
  6. Step 6: Final answer
    x = 56,520.09

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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.