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Finding the Fourth Proportional to 111,027.60, 166,483.80 and 40,870.80

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Solution

The fourth proportional to 111,027.60, 166,483.80 and 40,870.80 is: 61,285.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,027.60 : 166,483.80 = 40,870.80 : x
  2. Step 2: Convert to fraction form
    111,027.60/166,483.80 = 40,870.80/x
  3. Step 3: Cross multiply
    111,027.60x = 166,483.80 × 40,870.80
  4. Step 4: Simplify right side
    111,027.60x = 6,804,326,093.04
  5. Step 5: Solve for x
    x = 6,804,326,093.04/111,027.60
  6. Step 6: Final answer
    x = 61,285.00

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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.