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Finding the Fourth Proportional to 5,280,768,412.55, 7,921,152,618.83 and 5,280,768,412.55

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Solution

The fourth proportional to 5,280,768,412.55, 7,921,152,618.83 and 5,280,768,412.55 is: 7,921,152,618.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280,768,412.55 : 7,921,152,618.83 = 5,280,768,412.55 : x
  2. Step 2: Convert to fraction form
    5,280,768,412.55/7,921,152,618.83 = 5,280,768,412.55/x
  3. Step 3: Cross multiply
    5,280,768,412.55x = 7,921,152,618.83 × 5,280,768,412.55
  4. Step 4: Simplify right side
    5,280,768,412.55x = 41,829,772,540,505,178,112
  5. Step 5: Solve for x
    x = 41,829,772,540,505,178,112/5,280,768,412.55
  6. Step 6: Final answer
    x = 7,921,152,618.83

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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.