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Finding the Fourth Proportional to 1,167,983.66, 1,749,703.16 and 767,407.34

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Solution

The fourth proportional to 1,167,983.66, 1,749,703.16 and 767,407.34 is: 1,149,618.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,167,983.66 : 1,749,703.16 = 767,407.34 : x
  2. Step 2: Convert to fraction form
    1,167,983.66/1,749,703.16 = 767,407.34/x
  3. Step 3: Cross multiply
    1,167,983.66x = 1,749,703.16 × 767,407.34
  4. Step 4: Simplify right side
    1,167,983.66x = 1,342,735,047,805.19
  5. Step 5: Solve for x
    x = 1,342,735,047,805.19/1,167,983.66
  6. Step 6: Final answer
    x = 1,149,618.01

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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.