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Finding the Fourth Proportional to 611,544,449.40, 858,580,876.20 and 611,544,449.40

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Solution

The fourth proportional to 611,544,449.40, 858,580,876.20 and 611,544,449.40 is: 858,580,876.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,544,449.40 : 858,580,876.20 = 611,544,449.40 : x
  2. Step 2: Convert to fraction form
    611,544,449.40/858,580,876.20 = 611,544,449.40/x
  3. Step 3: Cross multiply
    611,544,449.40x = 858,580,876.20 × 611,544,449.40
  4. Step 4: Simplify right side
    611,544,449.40x = 525,060,369,201,098,560
  5. Step 5: Solve for x
    x = 525,060,369,201,098,560/611,544,449.40
  6. Step 6: Final answer
    x = 858,580,876.20

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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.