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Finding the Fourth Proportional to 646,389.50, 969,689.31 and 191,026.94

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Solution

The fourth proportional to 646,389.50, 969,689.31 and 191,026.94 is: 286,571.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,389.50 : 969,689.31 = 191,026.94 : x
  2. Step 2: Convert to fraction form
    646,389.50/969,689.31 = 191,026.94/x
  3. Step 3: Cross multiply
    646,389.50x = 969,689.31 × 191,026.94
  4. Step 4: Simplify right side
    646,389.50x = 185,236,781,640.01
  5. Step 5: Solve for x
    x = 185,236,781,640.01/646,389.50
  6. Step 6: Final answer
    x = 286,571.46

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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.