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Finding the Fourth Proportional to 626,614.80, 939,922.20 and 414,038.40

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Solution

The fourth proportional to 626,614.80, 939,922.20 and 414,038.40 is: 621,057.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,614.80 : 939,922.20 = 414,038.40 : x
  2. Step 2: Convert to fraction form
    626,614.80/939,922.20 = 414,038.40/x
  3. Step 3: Cross multiply
    626,614.80x = 939,922.20 × 414,038.40
  4. Step 4: Simplify right side
    626,614.80x = 389,163,883,812.48
  5. Step 5: Solve for x
    x = 389,163,883,812.48/626,614.80
  6. Step 6: Final answer
    x = 621,057.60

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Double scale
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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.