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Finding the Fourth Proportional to 407,569.20, 611,353.80 and 302,593.20

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Solution

The fourth proportional to 407,569.20, 611,353.80 and 302,593.20 is: 453,889.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,569.20 : 611,353.80 = 302,593.20 : x
  2. Step 2: Convert to fraction form
    407,569.20/611,353.80 = 302,593.20/x
  3. Step 3: Cross multiply
    407,569.20x = 611,353.80 × 302,593.20
  4. Step 4: Simplify right side
    407,569.20x = 184,991,502,674.16
  5. Step 5: Solve for x
    x = 184,991,502,674.16/407,569.20
  6. Step 6: Final answer
    x = 453,889.80

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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.