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Finding the Fourth Proportional to 92,999.56, 128,274.42 and 61,158.28

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Solution

The fourth proportional to 92,999.56, 128,274.42 and 61,158.28 is: 84,355.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,999.56 : 128,274.42 = 61,158.28 : x
  2. Step 2: Convert to fraction form
    92,999.56/128,274.42 = 61,158.28/x
  3. Step 3: Cross multiply
    92,999.56x = 128,274.42 × 61,158.28
  4. Step 4: Simplify right side
    92,999.56x = 7,845,042,895.20
  5. Step 5: Solve for x
    x = 7,845,042,895.20/92,999.56
  6. Step 6: Final answer
    x = 84,355.70

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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.