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Finding the Fourth Proportional to 861,720,577.10, 1,292,580,865.65 and 861,720,577.10

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Solution

The fourth proportional to 861,720,577.10, 1,292,580,865.65 and 861,720,577.10 is: 1,292,580,865.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,720,577.10 : 1,292,580,865.65 = 861,720,577.10 : x
  2. Step 2: Convert to fraction form
    861,720,577.10/1,292,580,865.65 = 861,720,577.10/x
  3. Step 3: Cross multiply
    861,720,577.10x = 1,292,580,865.65 × 861,720,577.10
  4. Step 4: Simplify right side
    861,720,577.10x = 1,113,843,529,496,335,616
  5. Step 5: Solve for x
    x = 1,113,843,529,496,335,616/861,720,577.10
  6. Step 6: Final answer
    x = 1,292,580,865.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.