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Finding the Third Proportional to 621,688 and 934,840

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Solution

The third proportional to 621,688 and 934,840 is: 1,405,730.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,688 : 934,840 = 934,840 : x
  2. Step 2: Convert to fraction form
    621,688/934,840 = 934,840/x
  3. Step 3: Cross multiply
    621,688x = 934,840 × 934,840
  4. Step 4: Simplify right side
    621,688x = 873,925,825,600
  5. Step 5: Solve for x
    x = 873,925,825,600/621,688
  6. Step 6: Final answer
    x = 1,405,730.57

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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.