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Finding the Fourth Proportional to 187,745.86, 281,681.66 and 61,391.93

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Solution

The fourth proportional to 187,745.86, 281,681.66 and 61,391.93 is: 92,108.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,745.86 : 281,681.66 = 61,391.93 : x
  2. Step 2: Convert to fraction form
    187,745.86/281,681.66 = 61,391.93/x
  3. Step 3: Cross multiply
    187,745.86x = 281,681.66 × 61,391.93
  4. Step 4: Simplify right side
    187,745.86x = 17,292,980,909.87
  5. Step 5: Solve for x
    x = 17,292,980,909.87/187,745.86
  6. Step 6: Final answer
    x = 92,108.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.