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Finding the Fourth Proportional to 99,219.95, 136,925.99 and 53,897.92

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Solution

The fourth proportional to 99,219.95, 136,925.99 and 53,897.92 is: 74,380.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,219.95 : 136,925.99 = 53,897.92 : x
  2. Step 2: Convert to fraction form
    99,219.95/136,925.99 = 53,897.92/x
  3. Step 3: Cross multiply
    99,219.95x = 136,925.99 × 53,897.92
  4. Step 4: Simplify right side
    99,219.95x = 7,380,026,054.94
  5. Step 5: Solve for x
    x = 7,380,026,054.94/99,219.95
  6. Step 6: Final answer
    x = 74,380.47

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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.