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Finding the Fourth Proportional to 289,695.70, 434,543.55 and 171,306.10

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Solution

The fourth proportional to 289,695.70, 434,543.55 and 171,306.10 is: 256,959.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,695.70 : 434,543.55 = 171,306.10 : x
  2. Step 2: Convert to fraction form
    289,695.70/434,543.55 = 171,306.10/x
  3. Step 3: Cross multiply
    289,695.70x = 434,543.55 × 171,306.10
  4. Step 4: Simplify right side
    289,695.70x = 74,439,960,830.66
  5. Step 5: Solve for x
    x = 74,439,960,830.66/289,695.70
  6. Step 6: Final answer
    x = 256,959.15

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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.