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Finding the Fourth Proportional to 661,620.60, 992,430.90 and 605,633.40

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Solution

The fourth proportional to 661,620.60, 992,430.90 and 605,633.40 is: 908,450.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,620.60 : 992,430.90 = 605,633.40 : x
  2. Step 2: Convert to fraction form
    661,620.60/992,430.90 = 605,633.40/x
  3. Step 3: Cross multiply
    661,620.60x = 992,430.90 × 605,633.40
  4. Step 4: Simplify right side
    661,620.60x = 601,049,300,232.06
  5. Step 5: Solve for x
    x = 601,049,300,232.06/661,620.60
  6. Step 6: Final answer
    x = 908,450.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.