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Finding the Fourth Proportional to 642,512.01, 963,730.76 and 193,223.10

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Solution

The fourth proportional to 642,512.01, 963,730.76 and 193,223.10 is: 289,823.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,512.01 : 963,730.76 = 193,223.10 : x
  2. Step 2: Convert to fraction form
    642,512.01/963,730.76 = 193,223.10/x
  3. Step 3: Cross multiply
    642,512.01x = 963,730.76 × 193,223.10
  4. Step 4: Simplify right side
    642,512.01x = 186,215,044,046.44
  5. Step 5: Solve for x
    x = 186,215,044,046.44/642,512.01
  6. Step 6: Final answer
    x = 289,823.44

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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.