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Finding the Fourth Proportional to 246,415.48, 369,668.84 and 77,978.20

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Solution

The fourth proportional to 246,415.48, 369,668.84 and 77,978.20 is: 116,981.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,415.48 : 369,668.84 = 77,978.20 : x
  2. Step 2: Convert to fraction form
    246,415.48/369,668.84 = 77,978.20/x
  3. Step 3: Cross multiply
    246,415.48x = 369,668.84 × 77,978.20
  4. Step 4: Simplify right side
    246,415.48x = 28,826,110,739.29
  5. Step 5: Solve for x
    x = 28,826,110,739.29/246,415.48
  6. Step 6: Final answer
    x = 116,981.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.