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Finding the Fourth Proportional to 114,989.93, 158,685.85 and 64,688.93

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Solution

The fourth proportional to 114,989.93, 158,685.85 and 64,688.93 is: 89,270.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,989.93 : 158,685.85 = 64,688.93 : x
  2. Step 2: Convert to fraction form
    114,989.93/158,685.85 = 64,688.93/x
  3. Step 3: Cross multiply
    114,989.93x = 158,685.85 × 64,688.93
  4. Step 4: Simplify right side
    114,989.93x = 10,265,217,842.64
  5. Step 5: Solve for x
    x = 10,265,217,842.64/114,989.93
  6. Step 6: Final answer
    x = 89,270.58

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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.