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Finding the Fourth Proportional to 66,356.20, 99,053.14 and 61,417.17

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Solution

The fourth proportional to 66,356.20, 99,053.14 and 61,417.17 is: 91,680.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,356.20 : 99,053.14 = 61,417.17 : x
  2. Step 2: Convert to fraction form
    66,356.20/99,053.14 = 61,417.17/x
  3. Step 3: Cross multiply
    66,356.20x = 99,053.14 × 61,417.17
  4. Step 4: Simplify right side
    66,356.20x = 6,083,563,538.41
  5. Step 5: Solve for x
    x = 6,083,563,538.41/66,356.20
  6. Step 6: Final answer
    x = 91,680.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.