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Finding the Fourth Proportional to 979,819,346.51, 1,352,148,330.85 and 533,786,374.97

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Solution

The fourth proportional to 979,819,346.51, 1,352,148,330.85 and 533,786,374.97 is: 736,623,907.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,819,346.51 : 1,352,148,330.85 = 533,786,374.97 : x
  2. Step 2: Convert to fraction form
    979,819,346.51/1,352,148,330.85 = 533,786,374.97/x
  3. Step 3: Cross multiply
    979,819,346.51x = 1,352,148,330.85 × 533,786,374.97
  4. Step 4: Simplify right side
    979,819,346.51x = 721,758,355,938,062,464
  5. Step 5: Solve for x
    x = 721,758,355,938,062,464/979,819,346.51
  6. Step 6: Final answer
    x = 736,623,907.78

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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.