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Finding the Fourth Proportional to 501,098.88, 751,646.88 and 127,120.80

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Solution

The fourth proportional to 501,098.88, 751,646.88 and 127,120.80 is: 190,680.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,098.88 : 751,646.88 = 127,120.80 : x
  2. Step 2: Convert to fraction form
    501,098.88/751,646.88 = 127,120.80/x
  3. Step 3: Cross multiply
    501,098.88x = 751,646.88 × 127,120.80
  4. Step 4: Simplify right side
    501,098.88x = 95,549,952,703.10
  5. Step 5: Solve for x
    x = 95,549,952,703.10/501,098.88
  6. Step 6: Final answer
    x = 190,680.83

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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.