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Finding the Fourth Proportional to 15,708.45, 21,675.05 and 10,410.45

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Solution

The fourth proportional to 15,708.45, 21,675.05 and 10,410.45 is: 14,364.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,708.45 : 21,675.05 = 10,410.45 : x
  2. Step 2: Convert to fraction form
    15,708.45/21,675.05 = 10,410.45/x
  3. Step 3: Cross multiply
    15,708.45x = 21,675.05 × 10,410.45
  4. Step 4: Simplify right side
    15,708.45x = 225,646,972.22
  5. Step 5: Solve for x
    x = 225,646,972.22/15,708.45
  6. Step 6: Final answer
    x = 14,364.69

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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.