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Finding the Fourth Proportional to 66,312.63, 99,474.35 and 26,869.95

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Solution

The fourth proportional to 66,312.63, 99,474.35 and 26,869.95 is: 40,307.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,312.63 : 99,474.35 = 26,869.95 : x
  2. Step 2: Convert to fraction form
    66,312.63/99,474.35 = 26,869.95/x
  3. Step 3: Cross multiply
    66,312.63x = 99,474.35 × 26,869.95
  4. Step 4: Simplify right side
    66,312.63x = 2,672,870,676.43
  5. Step 5: Solve for x
    x = 2,672,870,676.43/66,312.63
  6. Step 6: Final answer
    x = 40,307.11

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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.