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Finding the Fourth Proportional to 695,961.82, 960,411.35 and 405,554.90

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Solution

The fourth proportional to 695,961.82, 960,411.35 and 405,554.90 is: 559,656.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,961.82 : 960,411.35 = 405,554.90 : x
  2. Step 2: Convert to fraction form
    695,961.82/960,411.35 = 405,554.90/x
  3. Step 3: Cross multiply
    695,961.82x = 960,411.35 × 405,554.90
  4. Step 4: Simplify right side
    695,961.82x = 389,499,526,980.34
  5. Step 5: Solve for x
    x = 389,499,526,980.34/695,961.82
  6. Step 6: Final answer
    x = 559,656.46

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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.