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Finding the Fourth Proportional to 76,041.20, 104,934.98 and 42,048.80

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Solution

The fourth proportional to 76,041.20, 104,934.98 and 42,048.80 is: 58,026.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,041.20 : 104,934.98 = 42,048.80 : x
  2. Step 2: Convert to fraction form
    76,041.20/104,934.98 = 42,048.80/x
  3. Step 3: Cross multiply
    76,041.20x = 104,934.98 × 42,048.80
  4. Step 4: Simplify right side
    76,041.20x = 4,412,389,987.02
  5. Step 5: Solve for x
    x = 4,412,389,987.02/76,041.20
  6. Step 6: Final answer
    x = 58,026.31

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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.