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Finding the Fourth Proportional to 620,587.80, 856,522.62 and 365,923.80

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Solution

The fourth proportional to 620,587.80, 856,522.62 and 365,923.80 is: 505,040.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,587.80 : 856,522.62 = 365,923.80 : x
  2. Step 2: Convert to fraction form
    620,587.80/856,522.62 = 365,923.80/x
  3. Step 3: Cross multiply
    620,587.80x = 856,522.62 × 365,923.80
  4. Step 4: Simplify right side
    620,587.80x = 313,422,011,896.36
  5. Step 5: Solve for x
    x = 313,422,011,896.36/620,587.80
  6. Step 6: Final answer
    x = 505,040.56

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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.