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Finding the Fourth Proportional to 19,978,854.93, 27,567,853.95 and 12,134,285.01

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Solution

The fourth proportional to 19,978,854.93, 27,567,853.95 and 12,134,285.01 is: 16,743,511.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,978,854.93 : 27,567,853.95 = 12,134,285.01 : x
  2. Step 2: Convert to fraction form
    19,978,854.93/27,567,853.95 = 12,134,285.01/x
  3. Step 3: Cross multiply
    19,978,854.93x = 27,567,853.95 × 12,134,285.01
  4. Step 4: Simplify right side
    19,978,854.93x = 334,516,196,943,354.25
  5. Step 5: Solve for x
    x = 334,516,196,943,354.25/19,978,854.93
  6. Step 6: Final answer
    x = 16,743,511.98

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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.