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Finding the Fourth Proportional to 641,707.40, 962,561.10 and 610,603.40

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Solution

The fourth proportional to 641,707.40, 962,561.10 and 610,603.40 is: 915,905.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,707.40 : 962,561.10 = 610,603.40 : x
  2. Step 2: Convert to fraction form
    641,707.40/962,561.10 = 610,603.40/x
  3. Step 3: Cross multiply
    641,707.40x = 962,561.10 × 610,603.40
  4. Step 4: Simplify right side
    641,707.40x = 587,743,080,367.74
  5. Step 5: Solve for x
    x = 587,743,080,367.74/641,707.40
  6. Step 6: Final answer
    x = 915,905.10

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Double scale
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Similar ratio
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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.