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Finding the Fourth Proportional to 64,870.95, 89,521.92 and 36,576.64

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Solution

The fourth proportional to 64,870.95, 89,521.92 and 36,576.64 is: 50,475.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,870.95 : 89,521.92 = 36,576.64 : x
  2. Step 2: Convert to fraction form
    64,870.95/89,521.92 = 36,576.64/x
  3. Step 3: Cross multiply
    64,870.95x = 89,521.92 × 36,576.64
  4. Step 4: Simplify right side
    64,870.95x = 3,274,411,039.95
  5. Step 5: Solve for x
    x = 3,274,411,039.95/64,870.95
  6. Step 6: Final answer
    x = 50,475.77

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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.