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Finding the Fourth Proportional to 622,406.80, 933,610.20 and 613,075.60

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Solution

The fourth proportional to 622,406.80, 933,610.20 and 613,075.60 is: 919,613.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,406.80 : 933,610.20 = 613,075.60 : x
  2. Step 2: Convert to fraction form
    622,406.80/933,610.20 = 613,075.60/x
  3. Step 3: Cross multiply
    622,406.80x = 933,610.20 × 613,075.60
  4. Step 4: Simplify right side
    622,406.80x = 572,373,633,531.12
  5. Step 5: Solve for x
    x = 572,373,633,531.12/622,406.80
  6. Step 6: Final answer
    x = 919,613.40

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Similar ratio
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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.