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Finding the Fourth Proportional to 103,898.75, 155,848.20 and 25,012.98

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Solution

The fourth proportional to 103,898.75, 155,848.20 and 25,012.98 is: 37,519.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,898.75 : 155,848.20 = 25,012.98 : x
  2. Step 2: Convert to fraction form
    103,898.75/155,848.20 = 25,012.98/x
  3. Step 3: Cross multiply
    103,898.75x = 155,848.20 × 25,012.98
  4. Step 4: Simplify right side
    103,898.75x = 3,898,227,518.21
  5. Step 5: Solve for x
    x = 3,898,227,518.21/103,898.75
  6. Step 6: Final answer
    x = 37,519.48

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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.