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Finding the Fourth Proportional to 111,586.06, 153,992.31 and 61,285.06

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Solution

The fourth proportional to 111,586.06, 153,992.31 and 61,285.06 is: 84,575.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,586.06 : 153,992.31 = 61,285.06 : x
  2. Step 2: Convert to fraction form
    111,586.06/153,992.31 = 61,285.06/x
  3. Step 3: Cross multiply
    111,586.06x = 153,992.31 × 61,285.06
  4. Step 4: Simplify right side
    111,586.06x = 9,437,427,957.89
  5. Step 5: Solve for x
    x = 9,437,427,957.89/111,586.06
  6. Step 6: Final answer
    x = 84,575.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.