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Finding the Fourth Proportional to 294,879.74, 406,699.98 and 191,400.80

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Solution

The fourth proportional to 294,879.74, 406,699.98 and 191,400.80 is: 263,981.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,879.74 : 406,699.98 = 191,400.80 : x
  2. Step 2: Convert to fraction form
    294,879.74/406,699.98 = 191,400.80/x
  3. Step 3: Cross multiply
    294,879.74x = 406,699.98 × 191,400.80
  4. Step 4: Simplify right side
    294,879.74x = 77,842,699,498.48
  5. Step 5: Solve for x
    x = 77,842,699,498.48/294,879.74
  6. Step 6: Final answer
    x = 263,981.18

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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.