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Finding the Fourth Proportional to 7,887,212.55, 11,830,818.83 and 7,887,212.55

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Solution

The fourth proportional to 7,887,212.55, 11,830,818.83 and 7,887,212.55 is: 11,830,818.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887,212.55 : 11,830,818.83 = 7,887,212.55 : x
  2. Step 2: Convert to fraction form
    7,887,212.55/11,830,818.83 = 7,887,212.55/x
  3. Step 3: Cross multiply
    7,887,212.55x = 11,830,818.83 × 7,887,212.55
  4. Step 4: Simplify right side
    7,887,212.55x = 93,312,182,713,316.25
  5. Step 5: Solve for x
    x = 93,312,182,713,316.25/7,887,212.55
  6. Step 6: Final answer
    x = 11,830,818.83

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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.