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Finding the Fourth Proportional to 99,803.36, 137,751.75 and 65,817.98

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Solution

The fourth proportional to 99,803.36, 137,751.75 and 65,817.98 is: 90,844.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,803.36 : 137,751.75 = 65,817.98 : x
  2. Step 2: Convert to fraction form
    99,803.36/137,751.75 = 65,817.98/x
  3. Step 3: Cross multiply
    99,803.36x = 137,751.75 × 65,817.98
  4. Step 4: Simplify right side
    99,803.36x = 9,066,541,237.71
  5. Step 5: Solve for x
    x = 9,066,541,237.71/99,803.36
  6. Step 6: Final answer
    x = 90,844.05

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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.