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Finding the Fourth Proportional to 618,208.61, 853,420.07 and 414,392.67

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Solution

The fourth proportional to 618,208.61, 853,420.07 and 414,392.67 is: 572,057.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,208.61 : 853,420.07 = 414,392.67 : x
  2. Step 2: Convert to fraction form
    618,208.61/853,420.07 = 414,392.67/x
  3. Step 3: Cross multiply
    618,208.61x = 853,420.07 × 414,392.67
  4. Step 4: Simplify right side
    618,208.61x = 353,651,022,474.87
  5. Step 5: Solve for x
    x = 353,651,022,474.87/618,208.61
  6. Step 6: Final answer
    x = 572,057.74

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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.