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Finding the Fourth Proportional to 99,897.78, 149,856.70 and 28,822.16

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Solution

The fourth proportional to 99,897.78, 149,856.70 and 28,822.16 is: 43,236.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,897.78 : 149,856.70 = 28,822.16 : x
  2. Step 2: Convert to fraction form
    99,897.78/149,856.70 = 28,822.16/x
  3. Step 3: Cross multiply
    99,897.78x = 149,856.70 × 28,822.16
  4. Step 4: Simplify right side
    99,897.78x = 4,319,193,784.47
  5. Step 5: Solve for x
    x = 4,319,193,784.47/99,897.78
  6. Step 6: Final answer
    x = 43,236.13

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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.