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Finding the Fourth Proportional to 303,665.20, 455,497.80 and 163,697.20

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Solution

The fourth proportional to 303,665.20, 455,497.80 and 163,697.20 is: 245,545.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,665.20 : 455,497.80 = 163,697.20 : x
  2. Step 2: Convert to fraction form
    303,665.20/455,497.80 = 163,697.20/x
  3. Step 3: Cross multiply
    303,665.20x = 455,497.80 × 163,697.20
  4. Step 4: Simplify right side
    303,665.20x = 74,563,714,466.16
  5. Step 5: Solve for x
    x = 74,563,714,466.16/303,665.20
  6. Step 6: Final answer
    x = 245,545.80

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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.