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Finding the Fourth Proportional to 289,673.70, 434,510.55 and 195,195.30

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Solution

The fourth proportional to 289,673.70, 434,510.55 and 195,195.30 is: 292,792.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,673.70 : 434,510.55 = 195,195.30 : x
  2. Step 2: Convert to fraction form
    289,673.70/434,510.55 = 195,195.30/x
  3. Step 3: Cross multiply
    289,673.70x = 434,510.55 × 195,195.30
  4. Step 4: Simplify right side
    289,673.70x = 84,814,417,160.42
  5. Step 5: Solve for x
    x = 84,814,417,160.42/289,673.70
  6. Step 6: Final answer
    x = 292,792.95

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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.