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Finding the Fourth Proportional to 691,304.45, 954,004.10 and 385,400.25

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Solution

The fourth proportional to 691,304.45, 954,004.10 and 385,400.25 is: 531,854.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,304.45 : 954,004.10 = 385,400.25 : x
  2. Step 2: Convert to fraction form
    691,304.45/954,004.10 = 385,400.25/x
  3. Step 3: Cross multiply
    691,304.45x = 954,004.10 × 385,400.25
  4. Step 4: Simplify right side
    691,304.45x = 367,673,416,714.02
  5. Step 5: Solve for x
    x = 367,673,416,714.02/691,304.45
  6. Step 6: Final answer
    x = 531,854.55

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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.