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Finding the Fourth Proportional to 1,167,868.88, 1,747,365.60 and 712,583.76

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Solution

The fourth proportional to 1,167,868.88, 1,747,365.60 and 712,583.76 is: 1,066,167.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,167,868.88 : 1,747,365.60 = 712,583.76 : x
  2. Step 2: Convert to fraction form
    1,167,868.88/1,747,365.60 = 712,583.76/x
  3. Step 3: Cross multiply
    1,167,868.88x = 1,747,365.60 × 712,583.76
  4. Step 4: Simplify right side
    1,167,868.88x = 1,245,144,349,342.66
  5. Step 5: Solve for x
    x = 1,245,144,349,342.66/1,167,868.88
  6. Step 6: Final answer
    x = 1,066,167.93

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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.