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Finding the Fourth Proportional to 505,892.34, 696,822.12 and 352,656.54

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Solution

The fourth proportional to 505,892.34, 696,822.12 and 352,656.54 is: 485,753.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,892.34 : 696,822.12 = 352,656.54 : x
  2. Step 2: Convert to fraction form
    505,892.34/696,822.12 = 352,656.54/x
  3. Step 3: Cross multiply
    505,892.34x = 696,822.12 × 352,656.54
  4. Step 4: Simplify right side
    505,892.34x = 245,738,877,834.67
  5. Step 5: Solve for x
    x = 245,738,877,834.67/505,892.34
  6. Step 6: Final answer
    x = 485,753.31

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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.