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Finding the Fourth Proportional to 435,748.40, 653,622.60 and 140,260.40

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Solution

The fourth proportional to 435,748.40, 653,622.60 and 140,260.40 is: 210,390.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,748.40 : 653,622.60 = 140,260.40 : x
  2. Step 2: Convert to fraction form
    435,748.40/653,622.60 = 140,260.40/x
  3. Step 3: Cross multiply
    435,748.40x = 653,622.60 × 140,260.40
  4. Step 4: Simplify right side
    435,748.40x = 91,677,367,325.04
  5. Step 5: Solve for x
    x = 91,677,367,325.04/435,748.40
  6. Step 6: Final answer
    x = 210,390.60

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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.