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Finding the Fourth Proportional to 29,321.73, 40,463.75 and 15,892.63

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Solution

The fourth proportional to 29,321.73, 40,463.75 and 15,892.63 is: 21,931.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,321.73 : 40,463.75 = 15,892.63 : x
  2. Step 2: Convert to fraction form
    29,321.73/40,463.75 = 15,892.63/x
  3. Step 3: Cross multiply
    29,321.73x = 40,463.75 × 15,892.63
  4. Step 4: Simplify right side
    29,321.73x = 643,075,345.73
  5. Step 5: Solve for x
    x = 643,075,345.73/29,321.73
  6. Step 6: Final answer
    x = 21,931.70

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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.