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Finding the Fourth Proportional to 612,683.36, 845,495.52 and 344,411.36

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Solution

The fourth proportional to 612,683.36, 845,495.52 and 344,411.36 is: 475,283.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,683.36 : 845,495.52 = 344,411.36 : x
  2. Step 2: Convert to fraction form
    612,683.36/845,495.52 = 344,411.36/x
  3. Step 3: Cross multiply
    612,683.36x = 845,495.52 × 344,411.36
  4. Step 4: Simplify right side
    612,683.36x = 291,198,261,917.11
  5. Step 5: Solve for x
    x = 291,198,261,917.11/612,683.36
  6. Step 6: Final answer
    x = 475,283.45

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1.5x scale

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.