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Finding the Fourth Proportional to 476,448.66, 657,311.61 and 272,389.95

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Solution

The fourth proportional to 476,448.66, 657,311.61 and 272,389.95 is: 375,790.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,448.66 : 657,311.61 = 272,389.95 : x
  2. Step 2: Convert to fraction form
    476,448.66/657,311.61 = 272,389.95/x
  3. Step 3: Cross multiply
    476,448.66x = 657,311.61 × 272,389.95
  4. Step 4: Simplify right side
    476,448.66x = 179,045,076,582.32
  5. Step 5: Solve for x
    x = 179,045,076,582.32/476,448.66
  6. Step 6: Final answer
    x = 375,790.91

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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.