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Finding the Fourth Proportional to 505,483.56, 697,567.14 and 290,665.80

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Solution

The fourth proportional to 505,483.56, 697,567.14 and 290,665.80 is: 401,118.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,483.56 : 697,567.14 = 290,665.80 : x
  2. Step 2: Convert to fraction form
    505,483.56/697,567.14 = 290,665.80/x
  3. Step 3: Cross multiply
    505,483.56x = 697,567.14 × 290,665.80
  4. Step 4: Simplify right side
    505,483.56x = 202,758,910,801.81
  5. Step 5: Solve for x
    x = 202,758,910,801.81/505,483.56
  6. Step 6: Final answer
    x = 401,118.70

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1.5x scale

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.