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Finding the Fourth Proportional to 408,581.48, 563,860.65 and 340,484.46

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Solution

The fourth proportional to 408,581.48, 563,860.65 and 340,484.46 is: 469,883.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,581.48 : 563,860.65 = 340,484.46 : x
  2. Step 2: Convert to fraction form
    408,581.48/563,860.65 = 340,484.46/x
  3. Step 3: Cross multiply
    408,581.48x = 563,860.65 × 340,484.46
  4. Step 4: Simplify right side
    408,581.48x = 191,985,788,930.50
  5. Step 5: Solve for x
    x = 191,985,788,930.50/408,581.48
  6. Step 6: Final answer
    x = 469,883.73

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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.