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Finding the Fourth Proportional to 671,803,476.63, 924,978,974.25 and 571,133,825.43

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Solution

The fourth proportional to 671,803,476.63, 924,978,974.25 and 571,133,825.43 is: 786,371,012.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,803,476.63 : 924,978,974.25 = 571,133,825.43 : x
  2. Step 2: Convert to fraction form
    671,803,476.63/924,978,974.25 = 571,133,825.43/x
  3. Step 3: Cross multiply
    671,803,476.63x = 924,978,974.25 × 571,133,825.43
  4. Step 4: Simplify right side
    671,803,476.63x = 528,286,780,005,719,936
  5. Step 5: Solve for x
    x = 528,286,780,005,719,936/671,803,476.63
  6. Step 6: Final answer
    x = 786,371,012.33

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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.