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Finding the Fourth Proportional to 117,415,897.80, 176,123,846.70 and 81,584,089.80

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Solution

The fourth proportional to 117,415,897.80, 176,123,846.70 and 81,584,089.80 is: 122,376,134.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,415,897.80 : 176,123,846.70 = 81,584,089.80 : x
  2. Step 2: Convert to fraction form
    117,415,897.80/176,123,846.70 = 81,584,089.80/x
  3. Step 3: Cross multiply
    117,415,897.80x = 176,123,846.70 × 81,584,089.80
  4. Step 4: Simplify right side
    117,415,897.80x = 14,368,903,725,094,232
  5. Step 5: Solve for x
    x = 14,368,903,725,094,232/117,415,897.80
  6. Step 6: Final answer
    x = 122,376,134.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.