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Finding the Third Proportional to 91,210,821 and 141,351,659

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Solution

The third proportional to 91,210,821 and 141,351,659 is: 219,056,152.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,210,821 : 141,351,659 = 141,351,659 : x
  2. Step 2: Convert to fraction form
    91,210,821/141,351,659 = 141,351,659/x
  3. Step 3: Cross multiply
    91,210,821x = 141,351,659 × 141,351,659
  4. Step 4: Simplify right side
    91,210,821x = 19,980,291,502,052,280
  5. Step 5: Solve for x
    x = 19,980,291,502,052,280/91,210,821
  6. Step 6: Final answer
    x = 219,056,152.36

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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.