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Finding the Fourth Proportional to 76,461.71, 105,480.54 and 53,813.27

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Solution

The fourth proportional to 76,461.71, 105,480.54 and 53,813.27 is: 74,236.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,461.71 : 105,480.54 = 53,813.27 : x
  2. Step 2: Convert to fraction form
    76,461.71/105,480.54 = 53,813.27/x
  3. Step 3: Cross multiply
    76,461.71x = 105,480.54 × 53,813.27
  4. Step 4: Simplify right side
    76,461.71x = 5,676,252,778.77
  5. Step 5: Solve for x
    x = 5,676,252,778.77/76,461.71
  6. Step 6: Final answer
    x = 74,236.54

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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.