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Finding the Fourth Proportional to 76,451.36, 105,502.98 and 42,917.36

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Solution

The fourth proportional to 76,451.36, 105,502.98 and 42,917.36 is: 59,226.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,451.36 : 105,502.98 = 42,917.36 : x
  2. Step 2: Convert to fraction form
    76,451.36/105,502.98 = 42,917.36/x
  3. Step 3: Cross multiply
    76,451.36x = 105,502.98 × 42,917.36
  4. Step 4: Simplify right side
    76,451.36x = 4,527,909,373.73
  5. Step 5: Solve for x
    x = 4,527,909,373.73/76,451.36
  6. Step 6: Final answer
    x = 59,226.01

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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.