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Finding the Fourth Proportional to 25,848.40, 38,772.60 and 7,380.40

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Solution

The fourth proportional to 25,848.40, 38,772.60 and 7,380.40 is: 11,070.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,848.40 : 38,772.60 = 7,380.40 : x
  2. Step 2: Convert to fraction form
    25,848.40/38,772.60 = 7,380.40/x
  3. Step 3: Cross multiply
    25,848.40x = 38,772.60 × 7,380.40
  4. Step 4: Simplify right side
    25,848.40x = 286,157,297.04
  5. Step 5: Solve for x
    x = 286,157,297.04/25,848.40
  6. Step 6: Final answer
    x = 11,070.60

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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.