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Finding the Fourth Proportional to 78,055.81, 116,961.08 and 60,329.87

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Solution

The fourth proportional to 78,055.81, 116,961.08 and 60,329.87 is: 90,400.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,055.81 : 116,961.08 = 60,329.87 : x
  2. Step 2: Convert to fraction form
    78,055.81/116,961.08 = 60,329.87/x
  3. Step 3: Cross multiply
    78,055.81x = 116,961.08 × 60,329.87
  4. Step 4: Simplify right side
    78,055.81x = 7,056,246,482.39
  5. Step 5: Solve for x
    x = 7,056,246,482.39/78,055.81
  6. Step 6: Final answer
    x = 90,400.01

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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.