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Finding the Fourth Proportional to 613,191.84, 919,478.64 and 186,645.84

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Solution

The fourth proportional to 613,191.84, 919,478.64 and 186,645.84 is: 279,874.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,191.84 : 919,478.64 = 186,645.84 : x
  2. Step 2: Convert to fraction form
    613,191.84/919,478.64 = 186,645.84/x
  3. Step 3: Cross multiply
    613,191.84x = 919,478.64 × 186,645.84
  4. Step 4: Simplify right side
    613,191.84x = 171,616,863,124.86
  5. Step 5: Solve for x
    x = 171,616,863,124.86/613,191.84
  6. Step 6: Final answer
    x = 279,874.67

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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.