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Finding the Fourth Proportional to 613,503.75, 846,416.01 and 355,239.71

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Solution

The fourth proportional to 613,503.75, 846,416.01 and 355,239.71 is: 490,103.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,503.75 : 846,416.01 = 355,239.71 : x
  2. Step 2: Convert to fraction form
    613,503.75/846,416.01 = 355,239.71/x
  3. Step 3: Cross multiply
    613,503.75x = 846,416.01 × 355,239.71
  4. Step 4: Simplify right side
    613,503.75x = 300,680,578,205.89
  5. Step 5: Solve for x
    x = 300,680,578,205.89/613,503.75
  6. Step 6: Final answer
    x = 490,103.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.