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Finding the Fourth Proportional to 440,447.40, 607,914.18 and 289,558.44

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Solution

The fourth proportional to 440,447.40, 607,914.18 and 289,558.44 is: 399,654.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,447.40 : 607,914.18 = 289,558.44 : x
  2. Step 2: Convert to fraction form
    440,447.40/607,914.18 = 289,558.44/x
  3. Step 3: Cross multiply
    440,447.40x = 607,914.18 × 289,558.44
  4. Step 4: Simplify right side
    440,447.40x = 176,026,681,614.68
  5. Step 5: Solve for x
    x = 176,026,681,614.68/440,447.40
  6. Step 6: Final answer
    x = 399,654.26

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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.