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Finding the Fourth Proportional to 53,219,138.80, 79,828,708.20 and 53,219,138.80

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Solution

The fourth proportional to 53,219,138.80, 79,828,708.20 and 53,219,138.80 is: 79,828,708.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,219,138.80 : 79,828,708.20 = 53,219,138.80 : x
  2. Step 2: Convert to fraction form
    53,219,138.80/79,828,708.20 = 53,219,138.80/x
  3. Step 3: Cross multiply
    53,219,138.80x = 79,828,708.20 × 53,219,138.80
  4. Step 4: Simplify right side
    53,219,138.80x = 4,248,415,101,920,498
  5. Step 5: Solve for x
    x = 4,248,415,101,920,498/53,219,138.80
  6. Step 6: Final answer
    x = 79,828,708.20

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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.