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Finding the Fourth Proportional to 1,299,993,239.16, 1,793,994,076.80 and 705,277,692.72

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Solution

The fourth proportional to 1,299,993,239.16, 1,793,994,076.80 and 705,277,692.72 is: 973,285,064.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,993,239.16 : 1,793,994,076.80 = 705,277,692.72 : x
  2. Step 2: Convert to fraction form
    1,299,993,239.16/1,793,994,076.80 = 705,277,692.72/x
  3. Step 3: Cross multiply
    1,299,993,239.16x = 1,793,994,076.80 × 705,277,692.72
  4. Step 4: Simplify right side
    1,299,993,239.16x = 1,265,264,003,238,850,560
  5. Step 5: Solve for x
    x = 1,265,264,003,238,850,560/1,299,993,239.16
  6. Step 6: Final answer
    x = 973,285,064.20

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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.