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Finding the Fourth Proportional to 76,951.07, 105,955.60 and 65,595.11

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Solution

The fourth proportional to 76,951.07, 105,955.60 and 65,595.11 is: 90,319.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,951.07 : 105,955.60 = 65,595.11 : x
  2. Step 2: Convert to fraction form
    76,951.07/105,955.60 = 65,595.11/x
  3. Step 3: Cross multiply
    76,951.07x = 105,955.60 × 65,595.11
  4. Step 4: Simplify right side
    76,951.07x = 6,950,168,871.33
  5. Step 5: Solve for x
    x = 6,950,168,871.33/76,951.07
  6. Step 6: Final answer
    x = 90,319.33

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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.