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Finding the Fourth Proportional to 3,478,125.40, 5,208,893.70 and 3,478,125.40

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Solution

The fourth proportional to 3,478,125.40, 5,208,893.70 and 3,478,125.40 is: 5,208,893.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478,125.40 : 5,208,893.70 = 3,478,125.40 : x
  2. Step 2: Convert to fraction form
    3,478,125.40/5,208,893.70 = 3,478,125.40/x
  3. Step 3: Cross multiply
    3,478,125.40x = 5,208,893.70 × 3,478,125.40
  4. Step 4: Simplify right side
    3,478,125.40x = 18,117,185,483,869.98
  5. Step 5: Solve for x
    x = 18,117,185,483,869.98/3,478,125.40
  6. Step 6: Final answer
    x = 5,208,893.70

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1.5x scale

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.