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Finding the Fourth Proportional to 3,888,291.60, 5,832,437.40 and 3,663,905.40

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Solution

The fourth proportional to 3,888,291.60, 5,832,437.40 and 3,663,905.40 is: 5,495,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888,291.60 : 5,832,437.40 = 3,663,905.40 : x
  2. Step 2: Convert to fraction form
    3,888,291.60/5,832,437.40 = 3,663,905.40/x
  3. Step 3: Cross multiply
    3,888,291.60x = 5,832,437.40 × 3,663,905.40
  4. Step 4: Simplify right side
    3,888,291.60x = 21,369,498,885,021.96
  5. Step 5: Solve for x
    x = 21,369,498,885,021.96/3,888,291.60
  6. Step 6: Final answer
    x = 5,495,858.10

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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.