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Finding the Fourth Proportional to 35,491.76, 53,249.94 and 15,784.16

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Solution

The fourth proportional to 35,491.76, 53,249.94 and 15,784.16 is: 23,681.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,491.76 : 53,249.94 = 15,784.16 : x
  2. Step 2: Convert to fraction form
    35,491.76/53,249.94 = 15,784.16/x
  3. Step 3: Cross multiply
    35,491.76x = 53,249.94 × 15,784.16
  4. Step 4: Simplify right side
    35,491.76x = 840,505,572.95
  5. Step 5: Solve for x
    x = 840,505,572.95/35,491.76
  6. Step 6: Final answer
    x = 23,681.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.