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Finding the Fourth Proportional to 661,680.40, 992,520.60 and 603,619.60

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Solution

The fourth proportional to 661,680.40, 992,520.60 and 603,619.60 is: 905,429.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,680.40 : 992,520.60 = 603,619.60 : x
  2. Step 2: Convert to fraction form
    661,680.40/992,520.60 = 603,619.60/x
  3. Step 3: Cross multiply
    661,680.40x = 992,520.60 × 603,619.60
  4. Step 4: Simplify right side
    661,680.40x = 599,104,887,563.76
  5. Step 5: Solve for x
    x = 599,104,887,563.76/661,680.40
  6. Step 6: Final answer
    x = 905,429.40

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1.5x scale

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.