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Finding the Fourth Proportional to 287,168.08, 430,752.02 and 76,800.56

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Solution

The fourth proportional to 287,168.08, 430,752.02 and 76,800.56 is: 115,200.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,168.08 : 430,752.02 = 76,800.56 : x
  2. Step 2: Convert to fraction form
    287,168.08/430,752.02 = 76,800.56/x
  3. Step 3: Cross multiply
    287,168.08x = 430,752.02 × 76,800.56
  4. Step 4: Simplify right side
    287,168.08x = 33,081,996,357.13
  5. Step 5: Solve for x
    x = 33,081,996,357.13/287,168.08
  6. Step 6: Final answer
    x = 115,200.81

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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.