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Finding the Fourth Proportional to 893,887,813.40, 1,340,831,720.10 and 893,887,813.40

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Solution

The fourth proportional to 893,887,813.40, 1,340,831,720.10 and 893,887,813.40 is: 1,340,831,720.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,887,813.40 : 1,340,831,720.10 = 893,887,813.40 : x
  2. Step 2: Convert to fraction form
    893,887,813.40/1,340,831,720.10 = 893,887,813.40/x
  3. Step 3: Cross multiply
    893,887,813.40x = 1,340,831,720.10 × 893,887,813.40
  4. Step 4: Simplify right side
    893,887,813.40x = 1,198,553,134,417,549,824
  5. Step 5: Solve for x
    x = 1,198,553,134,417,549,824/893,887,813.40
  6. Step 6: Final answer
    x = 1,340,831,720.10

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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.