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Finding the Fourth Proportional to 127,010.85, 190,547.91 and 89,643.84

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Solution

The fourth proportional to 127,010.85, 190,547.91 and 89,643.84 is: 134,488.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,010.85 : 190,547.91 = 89,643.84 : x
  2. Step 2: Convert to fraction form
    127,010.85/190,547.91 = 89,643.84/x
  3. Step 3: Cross multiply
    127,010.85x = 190,547.91 × 89,643.84
  4. Step 4: Simplify right side
    127,010.85x = 17,081,446,356.37
  5. Step 5: Solve for x
    x = 17,081,446,356.37/127,010.85
  6. Step 6: Final answer
    x = 134,488.09

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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.