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Finding the Fourth Proportional to 124,656.60, 186,984.90 and 40,416.60

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Solution

The fourth proportional to 124,656.60, 186,984.90 and 40,416.60 is: 60,624.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,656.60 : 186,984.90 = 40,416.60 : x
  2. Step 2: Convert to fraction form
    124,656.60/186,984.90 = 40,416.60/x
  3. Step 3: Cross multiply
    124,656.60x = 186,984.90 × 40,416.60
  4. Step 4: Simplify right side
    124,656.60x = 7,557,293,909.34
  5. Step 5: Solve for x
    x = 7,557,293,909.34/124,656.60
  6. Step 6: Final answer
    x = 60,624.90

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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.