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Finding the Fourth Proportional to 117,671.94, 176,465.18 and 64,403.28

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Solution

The fourth proportional to 117,671.94, 176,465.18 and 64,403.28 is: 96,581.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,671.94 : 176,465.18 = 64,403.28 : x
  2. Step 2: Convert to fraction form
    117,671.94/176,465.18 = 64,403.28/x
  3. Step 3: Cross multiply
    117,671.94x = 176,465.18 × 64,403.28
  4. Step 4: Simplify right side
    117,671.94x = 11,364,936,397.79
  5. Step 5: Solve for x
    x = 11,364,936,397.79/117,671.94
  6. Step 6: Final answer
    x = 96,581.53

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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.