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Finding the Fourth Proportional to 74,999.70, 112,528.35 and 73,818.90

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Solution

The fourth proportional to 74,999.70, 112,528.35 and 73,818.90 is: 110,756.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,999.70 : 112,528.35 = 73,818.90 : x
  2. Step 2: Convert to fraction form
    74,999.70/112,528.35 = 73,818.90/x
  3. Step 3: Cross multiply
    74,999.70x = 112,528.35 × 73,818.90
  4. Step 4: Simplify right side
    74,999.70x = 8,306,719,015.82
  5. Step 5: Solve for x
    x = 8,306,719,015.82/74,999.70
  6. Step 6: Final answer
    x = 110,756.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.