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Finding the Fourth Proportional to 561,700.98, 842,376.51 and 187,636.50

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Solution

The fourth proportional to 561,700.98, 842,376.51 and 187,636.50 is: 281,396.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,700.98 : 842,376.51 = 187,636.50 : x
  2. Step 2: Convert to fraction form
    561,700.98/842,376.51 = 187,636.50/x
  3. Step 3: Cross multiply
    561,700.98x = 842,376.51 × 187,636.50
  4. Step 4: Simplify right side
    561,700.98x = 158,060,580,018.62
  5. Step 5: Solve for x
    x = 158,060,580,018.62/561,700.98
  6. Step 6: Final answer
    x = 281,396.30

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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.