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Finding the Fourth Proportional to 101,176,642, 139,642,681.08 and 57,716,578

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Solution

The fourth proportional to 101,176,642, 139,642,681.08 and 57,716,578 is: 79,659,667.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,176,642 : 139,642,681.08 = 57,716,578 : x
  2. Step 2: Convert to fraction form
    101,176,642/139,642,681.08 = 57,716,578/x
  3. Step 3: Cross multiply
    101,176,642x = 139,642,681.08 × 57,716,578
  4. Step 4: Simplify right side
    101,176,642x = 8,059,697,694,682,945
  5. Step 5: Solve for x
    x = 8,059,697,694,682,945/101,176,642
  6. Step 6: Final answer
    x = 79,659,667.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.