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Finding the Fourth Proportional to 12,657.30, 19,005.15 and 9,738.90

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Solution

The fourth proportional to 12,657.30, 19,005.15 and 9,738.90 is: 14,623.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,657.30 : 19,005.15 = 9,738.90 : x
  2. Step 2: Convert to fraction form
    12,657.30/19,005.15 = 9,738.90/x
  3. Step 3: Cross multiply
    12,657.30x = 19,005.15 × 9,738.90
  4. Step 4: Simplify right side
    12,657.30x = 185,089,255.34
  5. Step 5: Solve for x
    x = 185,089,255.34/12,657.30
  6. Step 6: Final answer
    x = 14,623.12

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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.