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Finding the Fourth Proportional to 691,365.15, 954,087.69 and 385,460.61

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Solution

The fourth proportional to 691,365.15, 954,087.69 and 385,460.61 is: 531,937.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,365.15 : 954,087.69 = 385,460.61 : x
  2. Step 2: Convert to fraction form
    691,365.15/954,087.69 = 385,460.61/x
  3. Step 3: Cross multiply
    691,365.15x = 954,087.69 × 385,460.61
  4. Step 4: Simplify right side
    691,365.15x = 367,763,222,980.89
  5. Step 5: Solve for x
    x = 367,763,222,980.89/691,365.15
  6. Step 6: Final answer
    x = 531,937.75

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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.