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Finding the Fourth Proportional to 76,615.40, 114,923.10 and 59,119.40

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Solution

The fourth proportional to 76,615.40, 114,923.10 and 59,119.40 is: 88,679.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,615.40 : 114,923.10 = 59,119.40 : x
  2. Step 2: Convert to fraction form
    76,615.40/114,923.10 = 59,119.40/x
  3. Step 3: Cross multiply
    76,615.40x = 114,923.10 × 59,119.40
  4. Step 4: Simplify right side
    76,615.40x = 6,794,184,718.14
  5. Step 5: Solve for x
    x = 6,794,184,718.14/76,615.40
  6. Step 6: Final answer
    x = 88,679.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.