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Finding the Fourth Proportional to 136,027,602.45, 187,658,978.17 and 86,441,426.14

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Solution

The fourth proportional to 136,027,602.45, 187,658,978.17 and 86,441,426.14 is: 119,251,603.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,027,602.45 : 187,658,978.17 = 86,441,426.14 : x
  2. Step 2: Convert to fraction form
    136,027,602.45/187,658,978.17 = 86,441,426.14/x
  3. Step 3: Cross multiply
    136,027,602.45x = 187,658,978.17 × 86,441,426.14
  4. Step 4: Simplify right side
    136,027,602.45x = 16,221,509,700,989,926
  5. Step 5: Solve for x
    x = 16,221,509,700,989,926/136,027,602.45
  6. Step 6: Final answer
    x = 119,251,603.42

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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.