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Finding the Fourth Proportional to 19,477.68, 26,879.20 and 10,525.20

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Solution

The fourth proportional to 19,477.68, 26,879.20 and 10,525.20 is: 14,524.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,477.68 : 26,879.20 = 10,525.20 : x
  2. Step 2: Convert to fraction form
    19,477.68/26,879.20 = 10,525.20/x
  3. Step 3: Cross multiply
    19,477.68x = 26,879.20 × 10,525.20
  4. Step 4: Simplify right side
    19,477.68x = 282,908,955.84
  5. Step 5: Solve for x
    x = 282,908,955.84/19,477.68
  6. Step 6: Final answer
    x = 14,524.78

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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.