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Finding the Fourth Proportional to 685,391.01, 945,839.48 and 383,585.01

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Solution

The fourth proportional to 685,391.01, 945,839.48 and 383,585.01 is: 529,347.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,391.01 : 945,839.48 = 383,585.01 : x
  2. Step 2: Convert to fraction form
    685,391.01/945,839.48 = 383,585.01/x
  3. Step 3: Cross multiply
    685,391.01x = 945,839.48 × 383,585.01
  4. Step 4: Simplify right side
    685,391.01x = 362,809,844,476.27
  5. Step 5: Solve for x
    x = 362,809,844,476.27/685,391.01
  6. Step 6: Final answer
    x = 529,347.25

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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.