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Finding the Fourth Proportional to 187,361.61, 258,666 and 123,883.53

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Solution

The fourth proportional to 187,361.61, 258,666 and 123,883.53 is: 171,030.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,361.61 : 258,666 = 123,883.53 : x
  2. Step 2: Convert to fraction form
    187,361.61/258,666 = 123,883.53/x
  3. Step 3: Cross multiply
    187,361.61x = 258,666 × 123,883.53
  4. Step 4: Simplify right side
    187,361.61x = 32,044,457,170.98
  5. Step 5: Solve for x
    x = 32,044,457,170.98/187,361.61
  6. Step 6: Final answer
    x = 171,030.01

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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.