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Finding the Fourth Proportional to 61,679.12, 85,117.12 and 33,384.76

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Solution

The fourth proportional to 61,679.12, 85,117.12 and 33,384.76 is: 46,070.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,679.12 : 85,117.12 = 33,384.76 : x
  2. Step 2: Convert to fraction form
    61,679.12/85,117.12 = 33,384.76/x
  3. Step 3: Cross multiply
    61,679.12x = 85,117.12 × 33,384.76
  4. Step 4: Simplify right side
    61,679.12x = 2,841,614,623.09
  5. Step 5: Solve for x
    x = 2,841,614,623.09/61,679.12
  6. Step 6: Final answer
    x = 46,070.93

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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.