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Finding the Fourth Proportional to 710,218,418.01, 980,135,577.29 and 392,672,788.14

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Solution

The fourth proportional to 710,218,418.01, 980,135,577.29 and 392,672,788.14 is: 541,907,334.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,218,418.01 : 980,135,577.29 = 392,672,788.14 : x
  2. Step 2: Convert to fraction form
    710,218,418.01/980,135,577.29 = 392,672,788.14/x
  3. Step 3: Cross multiply
    710,218,418.01x = 980,135,577.29 × 392,672,788.14
  4. Step 4: Simplify right side
    710,218,418.01x = 384,872,569,889,672,768
  5. Step 5: Solve for x
    x = 384,872,569,889,672,768/710,218,418.01
  6. Step 6: Final answer
    x = 541,907,334.60

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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.