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Finding the Fourth Proportional to 395,181.01, 545,351.45 and 213,892.90

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Solution

The fourth proportional to 395,181.01, 545,351.45 and 213,892.90 is: 295,173.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,181.01 : 545,351.45 = 213,892.90 : x
  2. Step 2: Convert to fraction form
    395,181.01/545,351.45 = 213,892.90/x
  3. Step 3: Cross multiply
    395,181.01x = 545,351.45 × 213,892.90
  4. Step 4: Simplify right side
    395,181.01x = 116,646,803,159.71
  5. Step 5: Solve for x
    x = 116,646,803,159.71/395,181.01
  6. Step 6: Final answer
    x = 295,173.10

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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.