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Finding the Fourth Proportional to 493,643.60, 740,465.39 and 119,666.60

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Solution

The fourth proportional to 493,643.60, 740,465.39 and 119,666.60 is: 179,499.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,643.60 : 740,465.39 = 119,666.60 : x
  2. Step 2: Convert to fraction form
    493,643.60/740,465.39 = 119,666.60/x
  3. Step 3: Cross multiply
    493,643.60x = 740,465.39 × 119,666.60
  4. Step 4: Simplify right side
    493,643.60x = 88,608,975,638.97
  5. Step 5: Solve for x
    x = 88,608,975,638.97/493,643.60
  6. Step 6: Final answer
    x = 179,499.90

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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.