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Finding the Fourth Proportional to 181,663.40, 272,300.70 and 81,806.60

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Solution

The fourth proportional to 181,663.40, 272,300.70 and 81,806.60 is: 122,622.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,663.40 : 272,300.70 = 81,806.60 : x
  2. Step 2: Convert to fraction form
    181,663.40/272,300.70 = 81,806.60/x
  3. Step 3: Cross multiply
    181,663.40x = 272,300.70 × 81,806.60
  4. Step 4: Simplify right side
    181,663.40x = 22,275,994,444.62
  5. Step 5: Solve for x
    x = 22,275,994,444.62/181,663.40
  6. Step 6: Final answer
    x = 122,622.36

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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.