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Finding the Fourth Proportional to 656,158.54, 905,498.79 and 354,352.54

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Solution

The fourth proportional to 656,158.54, 905,498.79 and 354,352.54 is: 489,006.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,158.54 : 905,498.79 = 354,352.54 : x
  2. Step 2: Convert to fraction form
    656,158.54/905,498.79 = 354,352.54/x
  3. Step 3: Cross multiply
    656,158.54x = 905,498.79 × 354,352.54
  4. Step 4: Simplify right side
    656,158.54x = 320,865,796,203.43
  5. Step 5: Solve for x
    x = 320,865,796,203.43/656,158.54
  6. Step 6: Final answer
    x = 489,006.51

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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.