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Finding the Fourth Proportional to 117,937.60, 176,445.60 and 76,465.60

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Solution

The fourth proportional to 117,937.60, 176,445.60 and 76,465.60 is: 114,399.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,937.60 : 176,445.60 = 76,465.60 : x
  2. Step 2: Convert to fraction form
    117,937.60/176,445.60 = 76,465.60/x
  3. Step 3: Cross multiply
    117,937.60x = 176,445.60 × 76,465.60
  4. Step 4: Simplify right side
    117,937.60x = 13,492,018,671.36
  5. Step 5: Solve for x
    x = 13,492,018,671.36/117,937.60
  6. Step 6: Final answer
    x = 114,399.64

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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.