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Finding the Fourth Proportional to 130,303.68, 179,817.28 and 72,944.96

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Solution

The fourth proportional to 130,303.68, 179,817.28 and 72,944.96 is: 100,663.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,303.68 : 179,817.28 = 72,944.96 : x
  2. Step 2: Convert to fraction form
    130,303.68/179,817.28 = 72,944.96/x
  3. Step 3: Cross multiply
    130,303.68x = 179,817.28 × 72,944.96
  4. Step 4: Simplify right side
    130,303.68x = 13,116,764,296.91
  5. Step 5: Solve for x
    x = 13,116,764,296.91/130,303.68
  6. Step 6: Final answer
    x = 100,663.04

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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.