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Finding the Fourth Proportional to 370,920.55, 556,374.78 and 118,197.65

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Solution

The fourth proportional to 370,920.55, 556,374.78 and 118,197.65 is: 177,294.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,920.55 : 556,374.78 = 118,197.65 : x
  2. Step 2: Convert to fraction form
    370,920.55/556,374.78 = 118,197.65/x
  3. Step 3: Cross multiply
    370,920.55x = 556,374.78 × 118,197.65
  4. Step 4: Simplify right side
    370,920.55x = 65,762,191,515.27
  5. Step 5: Solve for x
    x = 65,762,191,515.27/370,920.55
  6. Step 6: Final answer
    x = 177,294.55

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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.