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Finding the Fourth Proportional to 111,961.98, 154,501.83 and 61,651.26

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Solution

The fourth proportional to 111,961.98, 154,501.83 and 61,651.26 is: 85,075.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,961.98 : 154,501.83 = 61,651.26 : x
  2. Step 2: Convert to fraction form
    111,961.98/154,501.83 = 61,651.26/x
  3. Step 3: Cross multiply
    111,961.98x = 154,501.83 × 61,651.26
  4. Step 4: Simplify right side
    111,961.98x = 9,525,232,491.81
  5. Step 5: Solve for x
    x = 9,525,232,491.81/111,961.98
  6. Step 6: Final answer
    x = 85,075.60

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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.