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Finding the Third Proportional to 915,836 and 1,989,303.50

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Solution

The third proportional to 915,836 and 1,989,303.50 is: 4,321,001.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,836 : 1,989,303.50 = 1,989,303.50 : x
  2. Step 2: Convert to fraction form
    915,836/1,989,303.50 = 1,989,303.50/x
  3. Step 3: Cross multiply
    915,836x = 1,989,303.50 × 1,989,303.50
  4. Step 4: Simplify right side
    915,836x = 3,957,328,415,112.25
  5. Step 5: Solve for x
    x = 3,957,328,415,112.25/915,836
  6. Step 6: Final answer
    x = 4,321,001.16

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.