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Finding the Fourth Proportional to 124,590.98, 186,913.80 and 40,336.80

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Solution

The fourth proportional to 124,590.98, 186,913.80 and 40,336.80 is: 60,514.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,590.98 : 186,913.80 = 40,336.80 : x
  2. Step 2: Convert to fraction form
    124,590.98/186,913.80 = 40,336.80/x
  3. Step 3: Cross multiply
    124,590.98x = 186,913.80 × 40,336.80
  4. Step 4: Simplify right side
    124,590.98x = 7,539,504,567.84
  5. Step 5: Solve for x
    x = 7,539,504,567.84/124,590.98
  6. Step 6: Final answer
    x = 60,514.05

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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.