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Finding the Fourth Proportional to 38,785.96, 53,482.74 and 35,390.64

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Solution

The fourth proportional to 38,785.96, 53,482.74 and 35,390.64 is: 48,800.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,785.96 : 53,482.74 = 35,390.64 : x
  2. Step 2: Convert to fraction form
    38,785.96/53,482.74 = 35,390.64/x
  3. Step 3: Cross multiply
    38,785.96x = 53,482.74 × 35,390.64
  4. Step 4: Simplify right side
    38,785.96x = 1,892,788,397.55
  5. Step 5: Solve for x
    x = 1,892,788,397.55/38,785.96
  6. Step 6: Final answer
    x = 48,800.86

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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.