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Finding the Fourth Proportional to 1,191,431.40, 1,786,974.30 and 349,895.40

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Solution

The fourth proportional to 1,191,431.40, 1,786,974.30 and 349,895.40 is: 524,792.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,431.40 : 1,786,974.30 = 349,895.40 : x
  2. Step 2: Convert to fraction form
    1,191,431.40/1,786,974.30 = 349,895.40/x
  3. Step 3: Cross multiply
    1,191,431.40x = 1,786,974.30 × 349,895.40
  4. Step 4: Simplify right side
    1,191,431.40x = 625,254,087,488.22
  5. Step 5: Solve for x
    x = 625,254,087,488.22/1,191,431.40
  6. Step 6: Final answer
    x = 524,792.35

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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.