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Finding the Fourth Proportional to 626,613.80, 939,920.70 and 414,037.40

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Solution

The fourth proportional to 626,613.80, 939,920.70 and 414,037.40 is: 621,056.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,613.80 : 939,920.70 = 414,037.40 : x
  2. Step 2: Convert to fraction form
    626,613.80/939,920.70 = 414,037.40/x
  3. Step 3: Cross multiply
    626,613.80x = 939,920.70 × 414,037.40
  4. Step 4: Simplify right side
    626,613.80x = 389,162,322,834.18
  5. Step 5: Solve for x
    x = 389,162,322,834.18/626,613.80
  6. Step 6: Final answer
    x = 621,056.10

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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.