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Finding the Fourth Proportional to 691,430.07, 954,103.96 and 385,477.89

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Solution

The fourth proportional to 691,430.07, 954,103.96 and 385,477.89 is: 531,920.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,430.07 : 954,103.96 = 385,477.89 : x
  2. Step 2: Convert to fraction form
    691,430.07/954,103.96 = 385,477.89/x
  3. Step 3: Cross multiply
    691,430.07x = 954,103.96 × 385,477.89
  4. Step 4: Simplify right side
    691,430.07x = 367,785,978,245.40
  5. Step 5: Solve for x
    x = 367,785,978,245.40/691,430.07
  6. Step 6: Final answer
    x = 531,920.71

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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.