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Finding the Fourth Proportional to 505,554.48, 697,669.95 and 287,752.52

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Solution

The fourth proportional to 505,554.48, 697,669.95 and 287,752.52 is: 397,101.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,554.48 : 697,669.95 = 287,752.52 : x
  2. Step 2: Convert to fraction form
    505,554.48/697,669.95 = 287,752.52/x
  3. Step 3: Cross multiply
    505,554.48x = 697,669.95 × 287,752.52
  4. Step 4: Simplify right side
    505,554.48x = 200,756,281,313.66
  5. Step 5: Solve for x
    x = 200,756,281,313.66/505,554.48
  6. Step 6: Final answer
    x = 397,101.19

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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.