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Finding the Fourth Proportional to 370,678.59, 556,017.89 and 90,193.41

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Solution

The fourth proportional to 370,678.59, 556,017.89 and 90,193.41 is: 135,290.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,678.59 : 556,017.89 = 90,193.41 : x
  2. Step 2: Convert to fraction form
    370,678.59/556,017.89 = 90,193.41/x
  3. Step 3: Cross multiply
    370,678.59x = 556,017.89 × 90,193.41
  4. Step 4: Simplify right side
    370,678.59x = 50,149,149,069.14
  5. Step 5: Solve for x
    x = 50,149,149,069.14/370,678.59
  6. Step 6: Final answer
    x = 135,290.12

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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.