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Finding the Fourth Proportional to 189,803.66, 261,918.77 and 104,915.25

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Solution

The fourth proportional to 189,803.66, 261,918.77 and 104,915.25 is: 144,777.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,803.66 : 261,918.77 = 104,915.25 : x
  2. Step 2: Convert to fraction form
    189,803.66/261,918.77 = 104,915.25/x
  3. Step 3: Cross multiply
    189,803.66x = 261,918.77 × 104,915.25
  4. Step 4: Simplify right side
    189,803.66x = 27,479,272,709.67
  5. Step 5: Solve for x
    x = 27,479,272,709.67/189,803.66
  6. Step 6: Final answer
    x = 144,777.36

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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.