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Finding the Fourth Proportional to 76,888.63, 106,089.10 and 57,814.35

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Solution

The fourth proportional to 76,888.63, 106,089.10 and 57,814.35 is: 79,770.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,888.63 : 106,089.10 = 57,814.35 : x
  2. Step 2: Convert to fraction form
    76,888.63/106,089.10 = 57,814.35/x
  3. Step 3: Cross multiply
    76,888.63x = 106,089.10 × 57,814.35
  4. Step 4: Simplify right side
    76,888.63x = 6,133,472,358.59
  5. Step 5: Solve for x
    x = 6,133,472,358.59/76,888.63
  6. Step 6: Final answer
    x = 79,770.86

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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.