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Finding the Fourth Proportional to 523,588.50, 785,382.75 and 168,638.40

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Solution

The fourth proportional to 523,588.50, 785,382.75 and 168,638.40 is: 252,957.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,588.50 : 785,382.75 = 168,638.40 : x
  2. Step 2: Convert to fraction form
    523,588.50/785,382.75 = 168,638.40/x
  3. Step 3: Cross multiply
    523,588.50x = 785,382.75 × 168,638.40
  4. Step 4: Simplify right side
    523,588.50x = 132,445,690,347.60
  5. Step 5: Solve for x
    x = 132,445,690,347.60/523,588.50
  6. Step 6: Final answer
    x = 252,957.60

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1.5x scale

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.