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Finding the Fourth Proportional to 38,789,762.47, 53,580,969.38 and 28,751,611.01

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Solution

The fourth proportional to 38,789,762.47, 53,580,969.38 and 28,751,611.01 is: 39,715,097.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,789,762.47 : 53,580,969.38 = 28,751,611.01 : x
  2. Step 2: Convert to fraction form
    38,789,762.47/53,580,969.38 = 28,751,611.01/x
  3. Step 3: Cross multiply
    38,789,762.47x = 53,580,969.38 × 28,751,611.01
  4. Step 4: Simplify right side
    38,789,762.47x = 1,540,539,188,884,576
  5. Step 5: Solve for x
    x = 1,540,539,188,884,576/38,789,762.47
  6. Step 6: Final answer
    x = 39,715,097.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.