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Finding the Fourth Proportional to 64,756.94, 89,352.72 and 36,075.87

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Solution

The fourth proportional to 64,756.94, 89,352.72 and 36,075.87 is: 49,778.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,756.94 : 89,352.72 = 36,075.87 : x
  2. Step 2: Convert to fraction form
    64,756.94/89,352.72 = 36,075.87/x
  3. Step 3: Cross multiply
    64,756.94x = 89,352.72 × 36,075.87
  4. Step 4: Simplify right side
    64,756.94x = 3,223,477,110.87
  5. Step 5: Solve for x
    x = 3,223,477,110.87/64,756.94
  6. Step 6: Final answer
    x = 49,778.10

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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.