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Finding the Fourth Proportional to 76,381.98, 105,458.52 and 58,444.93

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Solution

The fourth proportional to 76,381.98, 105,458.52 and 58,444.93 is: 80,693.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,381.98 : 105,458.52 = 58,444.93 : x
  2. Step 2: Convert to fraction form
    76,381.98/105,458.52 = 58,444.93/x
  3. Step 3: Cross multiply
    76,381.98x = 105,458.52 × 58,444.93
  4. Step 4: Simplify right side
    76,381.98x = 6,163,515,819.30
  5. Step 5: Solve for x
    x = 6,163,515,819.30/76,381.98
  6. Step 6: Final answer
    x = 80,693.32

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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.