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Finding the Fourth Proportional to 911,756.40, 1,372,683.48 and 805,749

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Solution

The fourth proportional to 911,756.40, 1,372,683.48 and 805,749 is: 1,213,085.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,756.40 : 1,372,683.48 = 805,749 : x
  2. Step 2: Convert to fraction form
    911,756.40/1,372,683.48 = 805,749/x
  3. Step 3: Cross multiply
    911,756.40x = 1,372,683.48 × 805,749
  4. Step 4: Simplify right side
    911,756.40x = 1,106,038,341,326.52
  5. Step 5: Solve for x
    x = 1,106,038,341,326.52/911,756.40
  6. Step 6: Final answer
    x = 1,213,085.36

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.