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Finding the Fourth Proportional to 3,258,644.76, 4,496,978.68 and 1,808,434.12

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Solution

The fourth proportional to 3,258,644.76, 4,496,978.68 and 1,808,434.12 is: 2,495,666.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,258,644.76 : 4,496,978.68 = 1,808,434.12 : x
  2. Step 2: Convert to fraction form
    3,258,644.76/4,496,978.68 = 1,808,434.12/x
  3. Step 3: Cross multiply
    3,258,644.76x = 4,496,978.68 × 1,808,434.12
  4. Step 4: Simplify right side
    3,258,644.76x = 8,132,489,681,824.56
  5. Step 5: Solve for x
    x = 8,132,489,681,824.56/3,258,644.76
  6. Step 6: Final answer
    x = 2,495,666.23

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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.