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Finding the Fourth Proportional to 1,008,511.90, 1,415,459.60 and 1,008,511.90

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Solution

The fourth proportional to 1,008,511.90, 1,415,459.60 and 1,008,511.90 is: 1,415,459.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,511.90 : 1,415,459.60 = 1,008,511.90 : x
  2. Step 2: Convert to fraction form
    1,008,511.90/1,415,459.60 = 1,008,511.90/x
  3. Step 3: Cross multiply
    1,008,511.90x = 1,415,459.60 × 1,008,511.90
  4. Step 4: Simplify right side
    1,008,511.90x = 1,427,507,850,569.24
  5. Step 5: Solve for x
    x = 1,427,507,850,569.24/1,008,511.90
  6. Step 6: Final answer
    x = 1,415,459.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.