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Finding the Fourth Proportional to 622,643.20, 933,964.80 and 201,913.60

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Solution

The fourth proportional to 622,643.20, 933,964.80 and 201,913.60 is: 302,870.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,643.20 : 933,964.80 = 201,913.60 : x
  2. Step 2: Convert to fraction form
    622,643.20/933,964.80 = 201,913.60/x
  3. Step 3: Cross multiply
    622,643.20x = 933,964.80 × 201,913.60
  4. Step 4: Simplify right side
    622,643.20x = 188,580,195,041.28
  5. Step 5: Solve for x
    x = 188,580,195,041.28/622,643.20
  6. Step 6: Final answer
    x = 302,870.40

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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.