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Finding the Fourth Proportional to 35,491.95, 48,978.46 and 19,359.21

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Solution

The fourth proportional to 35,491.95, 48,978.46 and 19,359.21 is: 26,715.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,491.95 : 48,978.46 = 19,359.21 : x
  2. Step 2: Convert to fraction form
    35,491.95/48,978.46 = 19,359.21/x
  3. Step 3: Cross multiply
    35,491.95x = 48,978.46 × 19,359.21
  4. Step 4: Simplify right side
    35,491.95x = 948,184,244.22
  5. Step 5: Solve for x
    x = 948,184,244.22/35,491.95
  6. Step 6: Final answer
    x = 26,715.47

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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.