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Finding the Fourth Proportional to 644,130.86, 961,858.74 and 526,036.46

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Solution

The fourth proportional to 644,130.86, 961,858.74 and 526,036.46 is: 785,512.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,130.86 : 961,858.74 = 526,036.46 : x
  2. Step 2: Convert to fraction form
    644,130.86/961,858.74 = 526,036.46/x
  3. Step 3: Cross multiply
    644,130.86x = 961,858.74 × 526,036.46
  4. Step 4: Simplify right side
    644,130.86x = 505,972,766,609.66
  5. Step 5: Solve for x
    x = 505,972,766,609.66/644,130.86
  6. Step 6: Final answer
    x = 785,512.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.