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Finding the Fourth Proportional to 656,313.02, 905,712 and 354,507.02

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Solution

The fourth proportional to 656,313.02, 905,712 and 354,507.02 is: 489,219.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,313.02 : 905,712 = 354,507.02 : x
  2. Step 2: Convert to fraction form
    656,313.02/905,712 = 354,507.02/x
  3. Step 3: Cross multiply
    656,313.02x = 905,712 × 354,507.02
  4. Step 4: Simplify right side
    656,313.02x = 321,081,262,098.24
  5. Step 5: Solve for x
    x = 321,081,262,098.24/656,313.02
  6. Step 6: Final answer
    x = 489,219.71

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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.