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Finding the Fourth Proportional to 123,194.98, 170,009.47 and 66,606.76

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Solution

The fourth proportional to 123,194.98, 170,009.47 and 66,606.76 is: 91,917.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,194.98 : 170,009.47 = 66,606.76 : x
  2. Step 2: Convert to fraction form
    123,194.98/170,009.47 = 66,606.76/x
  3. Step 3: Cross multiply
    123,194.98x = 170,009.47 × 66,606.76
  4. Step 4: Simplify right side
    123,194.98x = 11,323,779,966.02
  5. Step 5: Solve for x
    x = 11,323,779,966.02/123,194.98
  6. Step 6: Final answer
    x = 91,917.54

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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.