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Finding the Fourth Proportional to 99,482.34, 137,233.26 and 61,690.98

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Solution

The fourth proportional to 99,482.34, 137,233.26 and 61,690.98 is: 85,101.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,482.34 : 137,233.26 = 61,690.98 : x
  2. Step 2: Convert to fraction form
    99,482.34/137,233.26 = 61,690.98/x
  3. Step 3: Cross multiply
    99,482.34x = 137,233.26 × 61,690.98
  4. Step 4: Simplify right side
    99,482.34x = 8,466,054,297.99
  5. Step 5: Solve for x
    x = 8,466,054,297.99/99,482.34
  6. Step 6: Final answer
    x = 85,101.08

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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.