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Finding the Fourth Proportional to 66,607.55, 91,917.33 and 36,392.22

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Solution

The fourth proportional to 66,607.55, 91,917.33 and 36,392.22 is: 50,220.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,607.55 : 91,917.33 = 36,392.22 : x
  2. Step 2: Convert to fraction form
    66,607.55/91,917.33 = 36,392.22/x
  3. Step 3: Cross multiply
    66,607.55x = 91,917.33 × 36,392.22
  4. Step 4: Simplify right side
    66,607.55x = 3,345,075,695.17
  5. Step 5: Solve for x
    x = 3,345,075,695.17/66,607.55
  6. Step 6: Final answer
    x = 50,220.67

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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.