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Finding the Fourth Proportional to 612,683.61, 845,495.86 and 344,411.61

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Solution

The fourth proportional to 612,683.61, 845,495.86 and 344,411.61 is: 475,283.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,683.61 : 845,495.86 = 344,411.61 : x
  2. Step 2: Convert to fraction form
    612,683.61/845,495.86 = 344,411.61/x
  3. Step 3: Cross multiply
    612,683.61x = 845,495.86 × 344,411.61
  4. Step 4: Simplify right side
    612,683.61x = 291,198,590,390.94
  5. Step 5: Solve for x
    x = 291,198,590,390.94/612,683.61
  6. Step 6: Final answer
    x = 475,283.79

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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.