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Finding the Fourth Proportional to 64,534,913.40, 90,416,063.40 and 64,534,913.40

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Solution

The fourth proportional to 64,534,913.40, 90,416,063.40 and 64,534,913.40 is: 90,416,063.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,534,913.40 : 90,416,063.40 = 64,534,913.40 : x
  2. Step 2: Convert to fraction form
    64,534,913.40/90,416,063.40 = 64,534,913.40/x
  3. Step 3: Cross multiply
    64,534,913.40x = 90,416,063.40 × 64,534,913.40
  4. Step 4: Simplify right side
    64,534,913.40x = 5,834,992,821,487,910
  5. Step 5: Solve for x
    x = 5,834,992,821,487,910/64,534,913.40
  6. Step 6: Final answer
    x = 90,416,063.40

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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.