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Finding the Fourth Proportional to 556,804.91, 768,392.79 and 302,156.03

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Solution

The fourth proportional to 556,804.91, 768,392.79 and 302,156.03 is: 416,976.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,804.91 : 768,392.79 = 302,156.03 : x
  2. Step 2: Convert to fraction form
    556,804.91/768,392.79 = 302,156.03/x
  3. Step 3: Cross multiply
    556,804.91x = 768,392.79 × 302,156.03
  4. Step 4: Simplify right side
    556,804.91x = 232,174,514,907.02
  5. Step 5: Solve for x
    x = 232,174,514,907.02/556,804.91
  6. Step 6: Final answer
    x = 416,976.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.