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Finding the Fourth Proportional to 465,136.70, 697,705.05 and 128,176.70

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Solution

The fourth proportional to 465,136.70, 697,705.05 and 128,176.70 is: 192,265.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,136.70 : 697,705.05 = 128,176.70 : x
  2. Step 2: Convert to fraction form
    465,136.70/697,705.05 = 128,176.70/x
  3. Step 3: Cross multiply
    465,136.70x = 697,705.05 × 128,176.70
  4. Step 4: Simplify right side
    465,136.70x = 89,429,530,882.34
  5. Step 5: Solve for x
    x = 89,429,530,882.34/465,136.70
  6. Step 6: Final answer
    x = 192,265.05

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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.