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Finding the Fourth Proportional to 375,721.80, 563,582.70 and 329,065.80

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Solution

The fourth proportional to 375,721.80, 563,582.70 and 329,065.80 is: 493,598.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,721.80 : 563,582.70 = 329,065.80 : x
  2. Step 2: Convert to fraction form
    375,721.80/563,582.70 = 329,065.80/x
  3. Step 3: Cross multiply
    375,721.80x = 563,582.70 × 329,065.80
  4. Step 4: Simplify right side
    375,721.80x = 185,455,792,041.66
  5. Step 5: Solve for x
    x = 185,455,792,041.66/375,721.80
  6. Step 6: Final answer
    x = 493,598.70

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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.