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Finding the Fourth Proportional to 308,707.20, 463,060.80 and 109,252.80

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Solution

The fourth proportional to 308,707.20, 463,060.80 and 109,252.80 is: 163,879.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,707.20 : 463,060.80 = 109,252.80 : x
  2. Step 2: Convert to fraction form
    308,707.20/463,060.80 = 109,252.80/x
  3. Step 3: Cross multiply
    308,707.20x = 463,060.80 × 109,252.80
  4. Step 4: Simplify right side
    308,707.20x = 50,590,688,970.24
  5. Step 5: Solve for x
    x = 50,590,688,970.24/308,707.20
  6. Step 6: Final answer
    x = 163,879.20

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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.