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Finding the Fourth Proportional to 98,677.93, 147,994.58 and 45,318.61

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Solution

The fourth proportional to 98,677.93, 147,994.58 and 45,318.61 is: 67,967.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,677.93 : 147,994.58 = 45,318.61 : x
  2. Step 2: Convert to fraction form
    98,677.93/147,994.58 = 45,318.61/x
  3. Step 3: Cross multiply
    98,677.93x = 147,994.58 × 45,318.61
  4. Step 4: Simplify right side
    98,677.93x = 6,706,909,241.76
  5. Step 5: Solve for x
    x = 6,706,909,241.76/98,677.93
  6. Step 6: Final answer
    x = 67,967.67

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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.