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Finding the Fourth Proportional to 25,695.49, 35,460.02 and 15,085.30

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Solution

The fourth proportional to 25,695.49, 35,460.02 and 15,085.30 is: 20,817.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,695.49 : 35,460.02 = 15,085.30 : x
  2. Step 2: Convert to fraction form
    25,695.49/35,460.02 = 15,085.30/x
  3. Step 3: Cross multiply
    25,695.49x = 35,460.02 × 15,085.30
  4. Step 4: Simplify right side
    25,695.49x = 534,925,039.71
  5. Step 5: Solve for x
    x = 534,925,039.71/25,695.49
  6. Step 6: Final answer
    x = 20,817.86

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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.