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Finding the Fourth Proportional to 78,835,595.84, 117,524,670.72 and 77,593,204.80

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Solution

The fourth proportional to 78,835,595.84, 117,524,670.72 and 77,593,204.80 is: 115,672,568.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,835,595.84 : 117,524,670.72 = 77,593,204.80 : x
  2. Step 2: Convert to fraction form
    78,835,595.84/117,524,670.72 = 77,593,204.80/x
  3. Step 3: Cross multiply
    78,835,595.84x = 117,524,670.72 × 77,593,204.80
  4. Step 4: Simplify right side
    78,835,595.84x = 9,119,115,844,229,524
  5. Step 5: Solve for x
    x = 9,119,115,844,229,524/78,835,595.84
  6. Step 6: Final answer
    x = 115,672,568.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.