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Finding the Fourth Proportional to 74,798.34, 112,196.60 and 21,491.60

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Solution

The fourth proportional to 74,798.34, 112,196.60 and 21,491.60 is: 32,237.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,798.34 : 112,196.60 = 21,491.60 : x
  2. Step 2: Convert to fraction form
    74,798.34/112,196.60 = 21,491.60/x
  3. Step 3: Cross multiply
    74,798.34x = 112,196.60 × 21,491.60
  4. Step 4: Simplify right side
    74,798.34x = 2,411,284,448.56
  5. Step 5: Solve for x
    x = 2,411,284,448.56/74,798.34
  6. Step 6: Final answer
    x = 32,237.14

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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.