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Finding the Fourth Proportional to 606,440.80, 909,661.20 and 576,916.30

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Solution

The fourth proportional to 606,440.80, 909,661.20 and 576,916.30 is: 865,374.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,440.80 : 909,661.20 = 576,916.30 : x
  2. Step 2: Convert to fraction form
    606,440.80/909,661.20 = 576,916.30/x
  3. Step 3: Cross multiply
    606,440.80x = 909,661.20 × 576,916.30
  4. Step 4: Simplify right side
    606,440.80x = 524,798,373,757.56
  5. Step 5: Solve for x
    x = 524,798,373,757.56/606,440.80
  6. Step 6: Final answer
    x = 865,374.45

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Double scale
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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.