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Finding the Fourth Proportional to 618,630.80, 928,237.80 and 461,166.80

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Solution

The fourth proportional to 618,630.80, 928,237.80 and 461,166.80 is: 691,967.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,630.80 : 928,237.80 = 461,166.80 : x
  2. Step 2: Convert to fraction form
    618,630.80/928,237.80 = 461,166.80/x
  3. Step 3: Cross multiply
    618,630.80x = 928,237.80 × 461,166.80
  4. Step 4: Simplify right side
    618,630.80x = 428,072,455,865.04
  5. Step 5: Solve for x
    x = 428,072,455,865.04/618,630.80
  6. Step 6: Final answer
    x = 691,967.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.