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Finding the Fourth Proportional to 66,463.54, 99,695.30 and 19,716

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Solution

The fourth proportional to 66,463.54, 99,695.30 and 19,716 is: 29,574.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,463.54 : 99,695.30 = 19,716 : x
  2. Step 2: Convert to fraction form
    66,463.54/99,695.30 = 19,716/x
  3. Step 3: Cross multiply
    66,463.54x = 99,695.30 × 19,716
  4. Step 4: Simplify right side
    66,463.54x = 1,965,592,534.80
  5. Step 5: Solve for x
    x = 1,965,592,534.80/66,463.54
  6. Step 6: Final answer
    x = 29,574.00

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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.