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Finding the Third Proportional to 1,393,518.38 and 2,153,705.63

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Solution

The third proportional to 1,393,518.38 and 2,153,705.63 is: 3,328,587.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,518.38 : 2,153,705.63 = 2,153,705.63 : x
  2. Step 2: Convert to fraction form
    1,393,518.38/2,153,705.63 = 2,153,705.63/x
  3. Step 3: Cross multiply
    1,393,518.38x = 2,153,705.63 × 2,153,705.63
  4. Step 4: Simplify right side
    1,393,518.38x = 4,638,447,919,156.64
  5. Step 5: Solve for x
    x = 4,638,447,919,156.64/1,393,518.38
  6. Step 6: Final answer
    x = 3,328,587.55

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.