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Finding the Third Proportional to 1,289,615,670 and 2,812,688,298

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Solution

The third proportional to 1,289,615,670 and 2,812,688,298 is: 6,134,552,832.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,615,670 : 2,812,688,298 = 2,812,688,298 : x
  2. Step 2: Convert to fraction form
    1,289,615,670/2,812,688,298 = 2,812,688,298/x
  3. Step 3: Cross multiply
    1,289,615,670x = 2,812,688,298 × 2,812,688,298
  4. Step 4: Simplify right side
    1,289,615,670x = 7,911,215,461,706,136,576
  5. Step 5: Solve for x
    x = 7,911,215,461,706,136,576/1,289,615,670
  6. Step 6: Final answer
    x = 6,134,552,832.87

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.