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Finding the Fourth Proportional to 416,666.60, 621,357.85 and 370,739.60

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Solution

The fourth proportional to 416,666.60, 621,357.85 and 370,739.60 is: 552,868.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,666.60 : 621,357.85 = 370,739.60 : x
  2. Step 2: Convert to fraction form
    416,666.60/621,357.85 = 370,739.60/x
  3. Step 3: Cross multiply
    416,666.60x = 621,357.85 × 370,739.60
  4. Step 4: Simplify right side
    416,666.60x = 230,361,960,765.86
  5. Step 5: Solve for x
    x = 230,361,960,765.86/416,666.60
  6. Step 6: Final answer
    x = 552,868.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.