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Finding the Fourth Proportional to 5,457,615.90, 7,651,859.70 and 5,457,615.90

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Solution

The fourth proportional to 5,457,615.90, 7,651,859.70 and 5,457,615.90 is: 7,651,859.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,457,615.90 : 7,651,859.70 = 5,457,615.90 : x
  2. Step 2: Convert to fraction form
    5,457,615.90/7,651,859.70 = 5,457,615.90/x
  3. Step 3: Cross multiply
    5,457,615.90x = 7,651,859.70 × 5,457,615.90
  4. Step 4: Simplify right side
    5,457,615.90x = 41,760,911,163,289.23
  5. Step 5: Solve for x
    x = 41,760,911,163,289.23/5,457,615.90
  6. Step 6: Final answer
    x = 7,651,859.70

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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.