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Finding the Fourth Proportional to 375,521.10, 562,555.80 and 208,803.66

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Solution

The fourth proportional to 375,521.10, 562,555.80 and 208,803.66 is: 312,801.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,521.10 : 562,555.80 = 208,803.66 : x
  2. Step 2: Convert to fraction form
    375,521.10/562,555.80 = 208,803.66/x
  3. Step 3: Cross multiply
    375,521.10x = 562,555.80 × 208,803.66
  4. Step 4: Simplify right side
    375,521.10x = 117,463,709,994.23
  5. Step 5: Solve for x
    x = 117,463,709,994.23/375,521.10
  6. Step 6: Final answer
    x = 312,801.89

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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.