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Finding the Fourth Proportional to 358,621.66, 537,803.28 and 118,691.29

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Solution

The fourth proportional to 358,621.66, 537,803.28 and 118,691.29 is: 177,994.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,621.66 : 537,803.28 = 118,691.29 : x
  2. Step 2: Convert to fraction form
    358,621.66/537,803.28 = 118,691.29/x
  3. Step 3: Cross multiply
    358,621.66x = 537,803.28 × 118,691.29
  4. Step 4: Simplify right side
    358,621.66x = 63,832,565,069.43
  5. Step 5: Solve for x
    x = 63,832,565,069.43/358,621.66
  6. Step 6: Final answer
    x = 177,994.17

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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.