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Finding the Fourth Proportional to 25,366.78, 35,005.80 and 14,188.78

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Solution

The fourth proportional to 25,366.78, 35,005.80 and 14,188.78 is: 19,580.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,366.78 : 35,005.80 = 14,188.78 : x
  2. Step 2: Convert to fraction form
    25,366.78/35,005.80 = 14,188.78/x
  3. Step 3: Cross multiply
    25,366.78x = 35,005.80 × 14,188.78
  4. Step 4: Simplify right side
    25,366.78x = 496,689,594.92
  5. Step 5: Solve for x
    x = 496,689,594.92/25,366.78
  6. Step 6: Final answer
    x = 19,580.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.