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Finding the Third Proportional to 86,643,530 and 190,290,688

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Solution

The third proportional to 86,643,530 and 190,290,688 is: 417,925,561.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,643,530 : 190,290,688 = 190,290,688 : x
  2. Step 2: Convert to fraction form
    86,643,530/190,290,688 = 190,290,688/x
  3. Step 3: Cross multiply
    86,643,530x = 190,290,688 × 190,290,688
  4. Step 4: Simplify right side
    86,643,530x = 36,210,545,939,513,344
  5. Step 5: Solve for x
    x = 36,210,545,939,513,344/86,643,530
  6. Step 6: Final answer
    x = 417,925,561.66

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.