Home / 154,681,832-213,456,665.12-85,067,211.20

Finding the Fourth Proportional to 154,681,832, 213,456,665.12 and 85,067,211.20

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Solution

The fourth proportional to 154,681,832, 213,456,665.12 and 85,067,211.20 is: 117,390,407.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,681,832 : 213,456,665.12 = 85,067,211.20 : x
  2. Step 2: Convert to fraction form
    154,681,832/213,456,665.12 = 85,067,211.20/x
  3. Step 3: Cross multiply
    154,681,832x = 213,456,665.12 × 85,067,211.20
  4. Step 4: Simplify right side
    154,681,832x = 18,158,163,213,810,716
  5. Step 5: Solve for x
    x = 18,158,163,213,810,716/154,681,832
  6. Step 6: Final answer
    x = 117,390,407.00

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1.5x scale

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.