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Finding the Fourth Proportional to 399,300.06, 551,026.80 and 227,214.30

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Solution

The fourth proportional to 399,300.06, 551,026.80 and 227,214.30 is: 313,551.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,300.06 : 551,026.80 = 227,214.30 : x
  2. Step 2: Convert to fraction form
    399,300.06/551,026.80 = 227,214.30/x
  3. Step 3: Cross multiply
    399,300.06x = 551,026.80 × 227,214.30
  4. Step 4: Simplify right side
    399,300.06x = 125,201,168,643.24
  5. Step 5: Solve for x
    x = 125,201,168,643.24/399,300.06
  6. Step 6: Final answer
    x = 313,551.59

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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.