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Finding the Fourth Proportional to 119,645.48, 165,118.01 and 65,930.45

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Solution

The fourth proportional to 119,645.48, 165,118.01 and 65,930.45 is: 90,988.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,645.48 : 165,118.01 = 65,930.45 : x
  2. Step 2: Convert to fraction form
    119,645.48/165,118.01 = 65,930.45/x
  3. Step 3: Cross multiply
    119,645.48x = 165,118.01 × 65,930.45
  4. Step 4: Simplify right side
    119,645.48x = 10,886,303,547.16
  5. Step 5: Solve for x
    x = 10,886,303,547.16/119,645.48
  6. Step 6: Final answer
    x = 90,988.01

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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.