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Finding the Fourth Proportional to 8,775,657.60, 13,139,866.80 and 8,775,657.60

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Solution

The fourth proportional to 8,775,657.60, 13,139,866.80 and 8,775,657.60 is: 13,139,866.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,775,657.60 : 13,139,866.80 = 8,775,657.60 : x
  2. Step 2: Convert to fraction form
    8,775,657.60/13,139,866.80 = 8,775,657.60/x
  3. Step 3: Cross multiply
    8,775,657.60x = 13,139,866.80 × 8,775,657.60
  4. Step 4: Simplify right side
    8,775,657.60x = 115,310,971,946,407.69
  5. Step 5: Solve for x
    x = 115,310,971,946,407.69/8,775,657.60
  6. Step 6: Final answer
    x = 13,139,866.80

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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.