Home / 66,005,901.40-99,022,848.90-19,943,987.80

Finding the Fourth Proportional to 66,005,901.40, 99,022,848.90 and 19,943,987.80

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Solution

The fourth proportional to 66,005,901.40, 99,022,848.90 and 19,943,987.80 is: 29,920,210.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,005,901.40 : 99,022,848.90 = 19,943,987.80 : x
  2. Step 2: Convert to fraction form
    66,005,901.40/99,022,848.90 = 19,943,987.80/x
  3. Step 3: Cross multiply
    66,005,901.40x = 99,022,848.90 × 19,943,987.80
  4. Step 4: Simplify right side
    66,005,901.40x = 1,974,910,490,382,843.50
  5. Step 5: Solve for x
    x = 1,974,910,490,382,843.50/66,005,901.40
  6. Step 6: Final answer
    x = 29,920,210.90

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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.