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Finding the Fourth Proportional to 869,841.54, 1,200,343.20 and 525,760.80

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Solution

The fourth proportional to 869,841.54, 1,200,343.20 and 525,760.80 is: 725,526.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,841.54 : 1,200,343.20 = 525,760.80 : x
  2. Step 2: Convert to fraction form
    869,841.54/1,200,343.20 = 525,760.80/x
  3. Step 3: Cross multiply
    869,841.54x = 1,200,343.20 × 525,760.80
  4. Step 4: Simplify right side
    869,841.54x = 631,093,401,106.56
  5. Step 5: Solve for x
    x = 631,093,401,106.56/869,841.54
  6. Step 6: Final answer
    x = 725,526.86

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Double scale
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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.