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Finding the Fourth Proportional to 371,057.68, 556,667.16 and 121,730.32

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Solution

The fourth proportional to 371,057.68, 556,667.16 and 121,730.32 is: 182,621.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,057.68 : 556,667.16 = 121,730.32 : x
  2. Step 2: Convert to fraction form
    371,057.68/556,667.16 = 121,730.32/x
  3. Step 3: Cross multiply
    371,057.68x = 556,667.16 × 121,730.32
  4. Step 4: Simplify right side
    371,057.68x = 67,763,271,520.29
  5. Step 5: Solve for x
    x = 67,763,271,520.29/371,057.68
  6. Step 6: Final answer
    x = 182,621.94

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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.