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Finding the Fourth Proportional to 632,776,547.88, 873,534,437.88 and 421,435,083.90

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Solution

The fourth proportional to 632,776,547.88, 873,534,437.88 and 421,435,083.90 is: 581,782,084.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,776,547.88 : 873,534,437.88 = 421,435,083.90 : x
  2. Step 2: Convert to fraction form
    632,776,547.88/873,534,437.88 = 421,435,083.90/x
  3. Step 3: Cross multiply
    632,776,547.88x = 873,534,437.88 × 421,435,083.90
  4. Step 4: Simplify right side
    632,776,547.88x = 368,138,059,119,192,512
  5. Step 5: Solve for x
    x = 368,138,059,119,192,512/632,776,547.88
  6. Step 6: Final answer
    x = 581,782,084.61

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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.