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Finding the Fourth Proportional to 736,903.40, 1,105,355.10 and 382,609.40

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Solution

The fourth proportional to 736,903.40, 1,105,355.10 and 382,609.40 is: 573,914.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    736,903.40 : 1,105,355.10 = 382,609.40 : x
  2. Step 2: Convert to fraction form
    736,903.40/1,105,355.10 = 382,609.40/x
  3. Step 3: Cross multiply
    736,903.40x = 1,105,355.10 × 382,609.40
  4. Step 4: Simplify right side
    736,903.40x = 422,919,251,597.94
  5. Step 5: Solve for x
    x = 422,919,251,597.94/736,903.40
  6. Step 6: Final answer
    x = 573,914.10

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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.