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Finding the Fourth Proportional to 75,319,252.80, 112,978,879.20 and 58,292,145.60

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Solution

The fourth proportional to 75,319,252.80, 112,978,879.20 and 58,292,145.60 is: 87,438,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,319,252.80 : 112,978,879.20 = 58,292,145.60 : x
  2. Step 2: Convert to fraction form
    75,319,252.80/112,978,879.20 = 58,292,145.60/x
  3. Step 3: Cross multiply
    75,319,252.80x = 112,978,879.20 × 58,292,145.60
  4. Step 4: Simplify right side
    75,319,252.80x = 6,585,781,276,051,212
  5. Step 5: Solve for x
    x = 6,585,781,276,051,212/75,319,252.80
  6. Step 6: Final answer
    x = 87,438,218.40

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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.