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Finding the Fourth Proportional to 656,151.45, 905,489.00 and 354,345.45

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Solution

The fourth proportional to 656,151.45, 905,489.00 and 354,345.45 is: 488,996.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,151.45 : 905,489.00 = 354,345.45 : x
  2. Step 2: Convert to fraction form
    656,151.45/905,489.00 = 354,345.45/x
  3. Step 3: Cross multiply
    656,151.45x = 905,489.00 × 354,345.45
  4. Step 4: Simplify right side
    656,151.45x = 320,855,905,403.32
  5. Step 5: Solve for x
    x = 320,855,905,403.32/656,151.45
  6. Step 6: Final answer
    x = 488,996.72

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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.