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Finding the Fourth Proportional to 91,026.94, 125,565.73 and 56,976.31

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Solution

The fourth proportional to 91,026.94, 125,565.73 and 56,976.31 is: 78,595.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,026.94 : 125,565.73 = 56,976.31 : x
  2. Step 2: Convert to fraction form
    91,026.94/125,565.73 = 56,976.31/x
  3. Step 3: Cross multiply
    91,026.94x = 125,565.73 × 56,976.31
  4. Step 4: Simplify right side
    91,026.94x = 7,154,271,972.37
  5. Step 5: Solve for x
    x = 7,154,271,972.37/91,026.94
  6. Step 6: Final answer
    x = 78,595.11

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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.