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Finding the Fourth Proportional to 77,606.86, 116,928.87 and 70,119.12

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Solution

The fourth proportional to 77,606.86, 116,928.87 and 70,119.12 is: 105,647.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,606.86 : 116,928.87 = 70,119.12 : x
  2. Step 2: Convert to fraction form
    77,606.86/116,928.87 = 70,119.12/x
  3. Step 3: Cross multiply
    77,606.86x = 116,928.87 × 70,119.12
  4. Step 4: Simplify right side
    77,606.86x = 8,198,949,428.53
  5. Step 5: Solve for x
    x = 8,198,949,428.53/77,606.86
  6. Step 6: Final answer
    x = 105,647.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.