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Finding the Fourth Proportional to 25,902.60, 38,810.70 and 12,726.60

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Solution

The fourth proportional to 25,902.60, 38,810.70 and 12,726.60 is: 19,068.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,902.60 : 38,810.70 = 12,726.60 : x
  2. Step 2: Convert to fraction form
    25,902.60/38,810.70 = 12,726.60/x
  3. Step 3: Cross multiply
    25,902.60x = 38,810.70 × 12,726.60
  4. Step 4: Simplify right side
    25,902.60x = 493,928,254.62
  5. Step 5: Solve for x
    x = 493,928,254.62/25,902.60
  6. Step 6: Final answer
    x = 19,068.67

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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.