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Finding the Fourth Proportional to 1,155,389.82, 1,593,900.66 and 747,623.30

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Solution

The fourth proportional to 1,155,389.82, 1,593,900.66 and 747,623.30 is: 1,031,372.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155,389.82 : 1,593,900.66 = 747,623.30 : x
  2. Step 2: Convert to fraction form
    1,155,389.82/1,593,900.66 = 747,623.30/x
  3. Step 3: Cross multiply
    1,155,389.82x = 1,593,900.66 × 747,623.30
  4. Step 4: Simplify right side
    1,155,389.82x = 1,191,637,271,301.38
  5. Step 5: Solve for x
    x = 1,191,637,271,301.38/1,155,389.82
  6. Step 6: Final answer
    x = 1,031,372.49

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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.