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Finding the Fourth Proportional to 656,157.54, 905,497.41 and 354,351.54

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Solution

The fourth proportional to 656,157.54, 905,497.41 and 354,351.54 is: 489,005.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,157.54 : 905,497.41 = 354,351.54 : x
  2. Step 2: Convert to fraction form
    656,157.54/905,497.41 = 354,351.54/x
  3. Step 3: Cross multiply
    656,157.54x = 905,497.41 × 354,351.54
  4. Step 4: Simplify right side
    656,157.54x = 320,864,401,699.51
  5. Step 5: Solve for x
    x = 320,864,401,699.51/656,157.54
  6. Step 6: Final answer
    x = 489,005.13

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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.