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Finding the Fourth Proportional to 836,235.68, 1,254,782.55 and 409,763.49

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Solution

The fourth proportional to 836,235.68, 1,254,782.55 and 409,763.49 is: 614,855.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,235.68 : 1,254,782.55 = 409,763.49 : x
  2. Step 2: Convert to fraction form
    836,235.68/1,254,782.55 = 409,763.49/x
  3. Step 3: Cross multiply
    836,235.68x = 1,254,782.55 × 409,763.49
  4. Step 4: Simplify right side
    836,235.68x = 514,164,076,879.10
  5. Step 5: Solve for x
    x = 514,164,076,879.10/836,235.68
  6. Step 6: Final answer
    x = 614,855.47

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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.