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Finding the Fourth Proportional to 187,326.66, 258,511.05 and 105,655.98

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Solution

The fourth proportional to 187,326.66, 258,511.05 and 105,655.98 is: 145,805.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,326.66 : 258,511.05 = 105,655.98 : x
  2. Step 2: Convert to fraction form
    187,326.66/258,511.05 = 105,655.98/x
  3. Step 3: Cross multiply
    187,326.66x = 258,511.05 × 105,655.98
  4. Step 4: Simplify right side
    187,326.66x = 27,313,238,328.58
  5. Step 5: Solve for x
    x = 27,313,238,328.58/187,326.66
  6. Step 6: Final answer
    x = 145,805.40

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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.