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Finding the Fourth Proportional to 307,615.80, 461,423.70 and 174,905.40

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Solution

The fourth proportional to 307,615.80, 461,423.70 and 174,905.40 is: 262,358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,615.80 : 461,423.70 = 174,905.40 : x
  2. Step 2: Convert to fraction form
    307,615.80/461,423.70 = 174,905.40/x
  3. Step 3: Cross multiply
    307,615.80x = 461,423.70 × 174,905.40
  4. Step 4: Simplify right side
    307,615.80x = 80,705,496,817.98
  5. Step 5: Solve for x
    x = 80,705,496,817.98/307,615.80
  6. Step 6: Final answer
    x = 262,358.10

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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.