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Finding the Fourth Proportional to 646,916.40, 970,201.80 and 197,636.40

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Solution

The fourth proportional to 646,916.40, 970,201.80 and 197,636.40 is: 296,401.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,916.40 : 970,201.80 = 197,636.40 : x
  2. Step 2: Convert to fraction form
    646,916.40/970,201.80 = 197,636.40/x
  3. Step 3: Cross multiply
    646,916.40x = 970,201.80 × 197,636.40
  4. Step 4: Simplify right side
    646,916.40x = 191,747,191,025.52
  5. Step 5: Solve for x
    x = 191,747,191,025.52/646,916.40
  6. Step 6: Final answer
    x = 296,401.81

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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.