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Finding the Fourth Proportional to 64,970.95, 89,658.94 and 36,291.01

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Solution

The fourth proportional to 64,970.95, 89,658.94 and 36,291.01 is: 50,081.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,970.95 : 89,658.94 = 36,291.01 : x
  2. Step 2: Convert to fraction form
    64,970.95/89,658.94 = 36,291.01/x
  3. Step 3: Cross multiply
    64,970.95x = 89,658.94 × 36,291.01
  4. Step 4: Simplify right side
    64,970.95x = 3,253,813,263.98
  5. Step 5: Solve for x
    x = 3,253,813,263.98/64,970.95
  6. Step 6: Final answer
    x = 50,081.05

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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.