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Finding the Fourth Proportional to 38,798.51, 53,543.01 and 21,804.30

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Solution

The fourth proportional to 38,798.51, 53,543.01 and 21,804.30 is: 30,090.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,798.51 : 53,543.01 = 21,804.30 : x
  2. Step 2: Convert to fraction form
    38,798.51/53,543.01 = 21,804.30/x
  3. Step 3: Cross multiply
    38,798.51x = 53,543.01 × 21,804.30
  4. Step 4: Simplify right side
    38,798.51x = 1,167,468,183.25
  5. Step 5: Solve for x
    x = 1,167,468,183.25/38,798.51
  6. Step 6: Final answer
    x = 30,090.54

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1.5x scale

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.