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Finding the Fourth Proportional to 99,018.94, 136,415.10 and 81,008.98

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Solution

The fourth proportional to 99,018.94, 136,415.10 and 81,008.98 is: 111,603.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,018.94 : 136,415.10 = 81,008.98 : x
  2. Step 2: Convert to fraction form
    99,018.94/136,415.10 = 81,008.98/x
  3. Step 3: Cross multiply
    99,018.94x = 136,415.10 × 81,008.98
  4. Step 4: Simplify right side
    99,018.94x = 11,050,848,107.60
  5. Step 5: Solve for x
    x = 11,050,848,107.60/99,018.94
  6. Step 6: Final answer
    x = 111,603.38

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1.5x scale

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.