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Finding the Fourth Proportional to 283,645.36, 391,430.66 and 154,583.86

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Solution

The fourth proportional to 283,645.36, 391,430.66 and 154,583.86 is: 213,325.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,645.36 : 391,430.66 = 154,583.86 : x
  2. Step 2: Convert to fraction form
    283,645.36/391,430.66 = 154,583.86/x
  3. Step 3: Cross multiply
    283,645.36x = 391,430.66 × 154,583.86
  4. Step 4: Simplify right side
    283,645.36x = 60,508,862,345.15
  5. Step 5: Solve for x
    x = 60,508,862,345.15/283,645.36
  6. Step 6: Final answer
    x = 213,325.76

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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.