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Finding the Fourth Proportional to 415,347.33, 623,012.05 and 115,819.93

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Solution

The fourth proportional to 415,347.33, 623,012.05 and 115,819.93 is: 173,727.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,347.33 : 623,012.05 = 115,819.93 : x
  2. Step 2: Convert to fraction form
    415,347.33/623,012.05 = 115,819.93/x
  3. Step 3: Cross multiply
    415,347.33x = 623,012.05 × 115,819.93
  4. Step 4: Simplify right side
    415,347.33x = 72,157,210,173.08
  5. Step 5: Solve for x
    x = 72,157,210,173.08/415,347.33
  6. Step 6: Final answer
    x = 173,727.40

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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.