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Finding the Third Proportional to 86,686,428 and 127,155,882

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Solution

The third proportional to 86,686,428 and 127,155,882 is: 186,518,451.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,686,428 : 127,155,882 = 127,155,882 : x
  2. Step 2: Convert to fraction form
    86,686,428/127,155,882 = 127,155,882/x
  3. Step 3: Cross multiply
    86,686,428x = 127,155,882 × 127,155,882
  4. Step 4: Simplify right side
    86,686,428x = 16,168,618,327,197,924
  5. Step 5: Solve for x
    x = 16,168,618,327,197,924/86,686,428
  6. Step 6: Final answer
    x = 186,518,451.62

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.