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Finding the Fourth Proportional to 936,881.80, 1,405,978.80 and 404,784.70

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Solution

The fourth proportional to 936,881.80, 1,405,978.80 and 404,784.70 is: 607,460.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,881.80 : 1,405,978.80 = 404,784.70 : x
  2. Step 2: Convert to fraction form
    936,881.80/1,405,978.80 = 404,784.70/x
  3. Step 3: Cross multiply
    936,881.80x = 1,405,978.80 × 404,784.70
  4. Step 4: Simplify right side
    936,881.80x = 569,118,706,764.36
  5. Step 5: Solve for x
    x = 569,118,706,764.36/936,881.80
  6. Step 6: Final answer
    x = 607,460.52

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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.