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Finding the Fourth Proportional to 695,731.04, 960,111 and 405,514.34

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Solution

The fourth proportional to 695,731.04, 960,111 and 405,514.34 is: 559,611.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,731.04 : 960,111 = 405,514.34 : x
  2. Step 2: Convert to fraction form
    695,731.04/960,111 = 405,514.34/x
  3. Step 3: Cross multiply
    695,731.04x = 960,111 × 405,514.34
  4. Step 4: Simplify right side
    695,731.04x = 389,338,778,491.74
  5. Step 5: Solve for x
    x = 389,338,778,491.74/695,731.04
  6. Step 6: Final answer
    x = 559,611.05

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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.