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Finding the Fourth Proportional to 929,590, 1,390,866.24 and 550,714.08

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Solution

The fourth proportional to 929,590, 1,390,866.24 and 550,714.08 is: 823,986.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    929,590 : 1,390,866.24 = 550,714.08 : x
  2. Step 2: Convert to fraction form
    929,590/1,390,866.24 = 550,714.08/x
  3. Step 3: Cross multiply
    929,590x = 1,390,866.24 × 550,714.08
  4. Step 4: Simplify right side
    929,590x = 765,969,621,764.66
  5. Step 5: Solve for x
    x = 765,969,621,764.66/929,590
  6. Step 6: Final answer
    x = 823,986.51

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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.