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Finding the Fourth Proportional to 61,790.70, 92,602.62 and 45,072.30

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Solution

The fourth proportional to 61,790.70, 92,602.62 and 45,072.30 is: 67,547.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,790.70 : 92,602.62 = 45,072.30 : x
  2. Step 2: Convert to fraction form
    61,790.70/92,602.62 = 45,072.30/x
  3. Step 3: Cross multiply
    61,790.70x = 92,602.62 × 45,072.30
  4. Step 4: Simplify right side
    61,790.70x = 4,173,813,069.43
  5. Step 5: Solve for x
    x = 4,173,813,069.43/61,790.70
  6. Step 6: Final answer
    x = 67,547.59

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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.