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Finding the Fourth Proportional to 25,628.92, 35,358.06 and 15,559

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Solution

The fourth proportional to 25,628.92, 35,358.06 and 15,559 is: 21,465.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,628.92 : 35,358.06 = 15,559 : x
  2. Step 2: Convert to fraction form
    25,628.92/35,358.06 = 15,559/x
  3. Step 3: Cross multiply
    25,628.92x = 35,358.06 × 15,559
  4. Step 4: Simplify right side
    25,628.92x = 550,136,055.54
  5. Step 5: Solve for x
    x = 550,136,055.54/25,628.92
  6. Step 6: Final answer
    x = 21,465.44

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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.