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Finding the Fourth Proportional to 112,010.64, 168,207.72 and 74,809.77

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Solution

The fourth proportional to 112,010.64, 168,207.72 and 74,809.77 is: 112,342.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,010.64 : 168,207.72 = 74,809.77 : x
  2. Step 2: Convert to fraction form
    112,010.64/168,207.72 = 74,809.77/x
  3. Step 3: Cross multiply
    112,010.64x = 168,207.72 × 74,809.77
  4. Step 4: Simplify right side
    112,010.64x = 12,583,580,845.42
  5. Step 5: Solve for x
    x = 12,583,580,845.42/112,010.64
  6. Step 6: Final answer
    x = 112,342.73

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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.