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Finding the Fourth Proportional to 71,482.74, 107,054.61 and 56,643.94

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Solution

The fourth proportional to 71,482.74, 107,054.61 and 56,643.94 is: 84,831.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,482.74 : 107,054.61 = 56,643.94 : x
  2. Step 2: Convert to fraction form
    71,482.74/107,054.61 = 56,643.94/x
  3. Step 3: Cross multiply
    71,482.74x = 107,054.61 × 56,643.94
  4. Step 4: Simplify right side
    71,482.74x = 6,063,994,905.56
  5. Step 5: Solve for x
    x = 6,063,994,905.56/71,482.74
  6. Step 6: Final answer
    x = 84,831.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.