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Finding the Fourth Proportional to 69,702,939.60, 104,554,409.40 and 66,567,656.40

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Solution

The fourth proportional to 69,702,939.60, 104,554,409.40 and 66,567,656.40 is: 99,851,484.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,702,939.60 : 104,554,409.40 = 66,567,656.40 : x
  2. Step 2: Convert to fraction form
    69,702,939.60/104,554,409.40 = 66,567,656.40/x
  3. Step 3: Cross multiply
    69,702,939.60x = 104,554,409.40 × 66,567,656.40
  4. Step 4: Simplify right side
    69,702,939.60x = 6,959,942,000,044,130
  5. Step 5: Solve for x
    x = 6,959,942,000,044,130/69,702,939.60
  6. Step 6: Final answer
    x = 99,851,484.60

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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.