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Finding the Fourth Proportional to 99,492.66, 137,296.71 and 59,197.20

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Solution

The fourth proportional to 99,492.66, 137,296.71 and 59,197.20 is: 81,690.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,492.66 : 137,296.71 = 59,197.20 : x
  2. Step 2: Convert to fraction form
    99,492.66/137,296.71 = 59,197.20/x
  3. Step 3: Cross multiply
    99,492.66x = 137,296.71 × 59,197.20
  4. Step 4: Simplify right side
    99,492.66x = 8,127,580,801.21
  5. Step 5: Solve for x
    x = 8,127,580,801.21/99,492.66
  6. Step 6: Final answer
    x = 81,690.26

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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.