Home / 28,179,440.64-38,911,326.06-21,198,017.22

Finding the Fourth Proportional to 28,179,440.64, 38,911,326.06 and 21,198,017.22

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Solution

The fourth proportional to 28,179,440.64, 38,911,326.06 and 21,198,017.22 is: 29,271,090.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179,440.64 : 38,911,326.06 = 21,198,017.22 : x
  2. Step 2: Convert to fraction form
    28,179,440.64/38,911,326.06 = 21,198,017.22/x
  3. Step 3: Cross multiply
    28,179,440.64x = 38,911,326.06 × 21,198,017.22
  4. Step 4: Simplify right side
    28,179,440.64x = 824,842,959,872,914.75
  5. Step 5: Solve for x
    x = 824,842,959,872,914.75/28,179,440.64
  6. Step 6: Final answer
    x = 29,271,090.59

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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.