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Finding the Fourth Proportional to 556,814.25, 768,006.73 and 511,021.51

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Solution

The fourth proportional to 556,814.25, 768,006.73 and 511,021.51 is: 704,845.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,814.25 : 768,006.73 = 511,021.51 : x
  2. Step 2: Convert to fraction form
    556,814.25/768,006.73 = 511,021.51/x
  3. Step 3: Cross multiply
    556,814.25x = 768,006.73 × 511,021.51
  4. Step 4: Simplify right side
    556,814.25x = 392,467,955,657.19
  5. Step 5: Solve for x
    x = 392,467,955,657.19/556,814.25
  6. Step 6: Final answer
    x = 704,845.39

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1.5x scale

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.