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Finding the Fourth Proportional to 127,070.80, 174,842.72 and 104,326

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Solution

The fourth proportional to 127,070.80, 174,842.72 and 104,326 is: 143,547.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,070.80 : 174,842.72 = 104,326 : x
  2. Step 2: Convert to fraction form
    127,070.80/174,842.72 = 104,326/x
  3. Step 3: Cross multiply
    127,070.80x = 174,842.72 × 104,326
  4. Step 4: Simplify right side
    127,070.80x = 18,240,641,606.72
  5. Step 5: Solve for x
    x = 18,240,641,606.72/127,070.80
  6. Step 6: Final answer
    x = 143,547.07

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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.