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Finding the Fourth Proportional to 21,899,595.09, 30,221,637.03 and 12,110,697.90

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Solution

The fourth proportional to 21,899,595.09, 30,221,637.03 and 12,110,697.90 is: 16,712,871.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,899,595.09 : 30,221,637.03 = 12,110,697.90 : x
  2. Step 2: Convert to fraction form
    21,899,595.09/30,221,637.03 = 12,110,697.90/x
  3. Step 3: Cross multiply
    21,899,595.09x = 30,221,637.03 × 12,110,697.90
  4. Step 4: Simplify right side
    21,899,595.09x = 366,005,116,113,783.25
  5. Step 5: Solve for x
    x = 366,005,116,113,783.25/21,899,595.09
  6. Step 6: Final answer
    x = 16,712,871.38

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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.