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Finding the Fourth Proportional to 573,964,678.82, 792,020,729.09 and 319,626,820.87

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Solution

The fourth proportional to 573,964,678.82, 792,020,729.09 and 319,626,820.87 is: 441,056,875.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,964,678.82 : 792,020,729.09 = 319,626,820.87 : x
  2. Step 2: Convert to fraction form
    573,964,678.82/792,020,729.09 = 319,626,820.87/x
  3. Step 3: Cross multiply
    573,964,678.82x = 792,020,729.09 × 319,626,820.87
  4. Step 4: Simplify right side
    573,964,678.82x = 253,151,067,700,995,232
  5. Step 5: Solve for x
    x = 253,151,067,700,995,232/573,964,678.82
  6. Step 6: Final answer
    x = 441,056,875.17

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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.