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Finding the Fourth Proportional to 82,573.04, 124,005 and 61,518.80

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Solution

The fourth proportional to 82,573.04, 124,005 and 61,518.80 is: 92,386.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,573.04 : 124,005 = 61,518.80 : x
  2. Step 2: Convert to fraction form
    82,573.04/124,005 = 61,518.80/x
  3. Step 3: Cross multiply
    82,573.04x = 124,005 × 61,518.80
  4. Step 4: Simplify right side
    82,573.04x = 7,628,638,794
  5. Step 5: Solve for x
    x = 7,628,638,794/82,573.04
  6. Step 6: Final answer
    x = 92,386.56

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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.