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Finding the Fourth Proportional to 1,365,221, 1,884,005.79 and 761,609

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Solution

The fourth proportional to 1,365,221, 1,884,005.79 and 761,609 is: 1,051,020.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,365,221 : 1,884,005.79 = 761,609 : x
  2. Step 2: Convert to fraction form
    1,365,221/1,884,005.79 = 761,609/x
  3. Step 3: Cross multiply
    1,365,221x = 1,884,005.79 × 761,609
  4. Step 4: Simplify right side
    1,365,221x = 1,434,875,765,716.11
  5. Step 5: Solve for x
    x = 1,434,875,765,716.11/1,365,221
  6. Step 6: Final answer
    x = 1,051,020.87

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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.