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Finding the Fourth Proportional to 118,368.46, 163,347.39 and 64,653.46

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Solution

The fourth proportional to 118,368.46, 163,347.39 and 64,653.46 is: 89,221.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,368.46 : 163,347.39 = 64,653.46 : x
  2. Step 2: Convert to fraction form
    118,368.46/163,347.39 = 64,653.46/x
  3. Step 3: Cross multiply
    118,368.46x = 163,347.39 × 64,653.46
  4. Step 4: Simplify right side
    118,368.46x = 10,560,974,392.10
  5. Step 5: Solve for x
    x = 10,560,974,392.10/118,368.46
  6. Step 6: Final answer
    x = 89,221.19

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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.