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Finding the Fourth Proportional to 119,336.96, 164,686.08 and 65,620.64

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Solution

The fourth proportional to 119,336.96, 164,686.08 and 65,620.64 is: 90,557.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,336.96 : 164,686.08 = 65,620.64 : x
  2. Step 2: Convert to fraction form
    119,336.96/164,686.08 = 65,620.64/x
  3. Step 3: Cross multiply
    119,336.96x = 164,686.08 × 65,620.64
  4. Step 4: Simplify right side
    119,336.96x = 10,806,805,968.69
  5. Step 5: Solve for x
    x = 10,806,805,968.69/119,336.96
  6. Step 6: Final answer
    x = 90,557.07

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1.5x scale

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.