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Finding the Third Proportional to 684,140 and 1,073,208

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Solution

The third proportional to 684,140 and 1,073,208 is: 1,683,537.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,140 : 1,073,208 = 1,073,208 : x
  2. Step 2: Convert to fraction form
    684,140/1,073,208 = 1,073,208/x
  3. Step 3: Cross multiply
    684,140x = 1,073,208 × 1,073,208
  4. Step 4: Simplify right side
    684,140x = 1,151,775,411,264
  5. Step 5: Solve for x
    x = 1,151,775,411,264/684,140
  6. Step 6: Final answer
    x = 1,683,537.60

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.