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Finding the Fourth Proportional to 118,953.81, 164,158.53 and 65,235.60

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Solution

The fourth proportional to 118,953.81, 164,158.53 and 65,235.60 is: 90,026.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,953.81 : 164,158.53 = 65,235.60 : x
  2. Step 2: Convert to fraction form
    118,953.81/164,158.53 = 65,235.60/x
  3. Step 3: Cross multiply
    118,953.81x = 164,158.53 × 65,235.60
  4. Step 4: Simplify right side
    118,953.81x = 10,708,980,199.67
  5. Step 5: Solve for x
    x = 10,708,980,199.67/118,953.81
  6. Step 6: Final answer
    x = 90,026.37

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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.