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Finding the Fourth Proportional to 685,056.78, 946,281.96 and 525,878.82

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Solution

The fourth proportional to 685,056.78, 946,281.96 and 525,878.82 is: 726,406.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,056.78 : 946,281.96 = 525,878.82 : x
  2. Step 2: Convert to fraction form
    685,056.78/946,281.96 = 525,878.82/x
  3. Step 3: Cross multiply
    685,056.78x = 946,281.96 × 525,878.82
  4. Step 4: Simplify right side
    685,056.78x = 497,629,640,512.09
  5. Step 5: Solve for x
    x = 497,629,640,512.09/685,056.78
  6. Step 6: Final answer
    x = 726,406.42

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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.