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Finding the Fourth Proportional to 306,957.02, 423,620.16 and 186,109.88

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Solution

The fourth proportional to 306,957.02, 423,620.16 and 186,109.88 is: 256,843.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,957.02 : 423,620.16 = 186,109.88 : x
  2. Step 2: Convert to fraction form
    306,957.02/423,620.16 = 186,109.88/x
  3. Step 3: Cross multiply
    306,957.02x = 423,620.16 × 186,109.88
  4. Step 4: Simplify right side
    306,957.02x = 78,839,897,143.18
  5. Step 5: Solve for x
    x = 78,839,897,143.18/306,957.02
  6. Step 6: Final answer
    x = 256,843.44

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1.5x scale

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.