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Finding the Fourth Proportional to 119,328.32, 164,669.60 and 65,613.28

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Solution

The fourth proportional to 119,328.32, 164,669.60 and 65,613.28 is: 90,544.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,328.32 : 164,669.60 = 65,613.28 : x
  2. Step 2: Convert to fraction form
    119,328.32/164,669.60 = 65,613.28/x
  3. Step 3: Cross multiply
    119,328.32x = 164,669.60 × 65,613.28
  4. Step 4: Simplify right side
    119,328.32x = 10,804,512,572.29
  5. Step 5: Solve for x
    x = 10,804,512,572.29/119,328.32
  6. Step 6: Final answer
    x = 90,544.41

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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.