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Finding the Fourth Proportional to 620,988.40, 931,482.60 and 200,264.27

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Solution

The fourth proportional to 620,988.40, 931,482.60 and 200,264.27 is: 300,396.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,988.40 : 931,482.60 = 200,264.27 : x
  2. Step 2: Convert to fraction form
    620,988.40/931,482.60 = 200,264.27/x
  3. Step 3: Cross multiply
    620,988.40x = 931,482.60 × 200,264.27
  4. Step 4: Simplify right side
    620,988.40x = 186,542,685,639.30
  5. Step 5: Solve for x
    x = 186,542,685,639.30/620,988.40
  6. Step 6: Final answer
    x = 300,396.41

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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.