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Finding the Fourth Proportional to 94,578.40, 141,867.60 and 77,665.60

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Solution

The fourth proportional to 94,578.40, 141,867.60 and 77,665.60 is: 116,498.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,578.40 : 141,867.60 = 77,665.60 : x
  2. Step 2: Convert to fraction form
    94,578.40/141,867.60 = 77,665.60/x
  3. Step 3: Cross multiply
    94,578.40x = 141,867.60 × 77,665.60
  4. Step 4: Simplify right side
    94,578.40x = 11,018,232,274.56
  5. Step 5: Solve for x
    x = 11,018,232,274.56/94,578.40
  6. Step 6: Final answer
    x = 116,498.40

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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.