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Finding the Fourth Proportional to 371,476.64, 557,215.68 and 90,994.88

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Solution

The fourth proportional to 371,476.64, 557,215.68 and 90,994.88 is: 136,492.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,476.64 : 557,215.68 = 90,994.88 : x
  2. Step 2: Convert to fraction form
    371,476.64/557,215.68 = 90,994.88/x
  3. Step 3: Cross multiply
    371,476.64x = 557,215.68 × 90,994.88
  4. Step 4: Simplify right side
    371,476.64x = 50,703,773,935.72
  5. Step 5: Solve for x
    x = 50,703,773,935.72/371,476.64
  6. Step 6: Final answer
    x = 136,492.50

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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.