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Finding the Fourth Proportional to 72,243.18, 99,651.99 and 47,714.14

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Solution

The fourth proportional to 72,243.18, 99,651.99 and 47,714.14 is: 65,816.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,243.18 : 99,651.99 = 47,714.14 : x
  2. Step 2: Convert to fraction form
    72,243.18/99,651.99 = 47,714.14/x
  3. Step 3: Cross multiply
    72,243.18x = 99,651.99 × 47,714.14
  4. Step 4: Simplify right side
    72,243.18x = 4,754,809,002.14
  5. Step 5: Solve for x
    x = 4,754,809,002.14/72,243.18
  6. Step 6: Final answer
    x = 65,816.72

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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.