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Finding the Fourth Proportional to 111,558.54, 153,948.86 and 61,257.18

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Solution

The fourth proportional to 111,558.54, 153,948.86 and 61,257.18 is: 84,533.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,558.54 : 153,948.86 = 61,257.18 : x
  2. Step 2: Convert to fraction form
    111,558.54/153,948.86 = 61,257.18/x
  3. Step 3: Cross multiply
    111,558.54x = 153,948.86 × 61,257.18
  4. Step 4: Simplify right side
    111,558.54x = 9,430,473,027.81
  5. Step 5: Solve for x
    x = 9,430,473,027.81/111,558.54
  6. Step 6: Final answer
    x = 84,533.85

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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.