Home / 85,873,850,333.24-128,643,201,179.21-66,898,288,157.13

Finding the Fourth Proportional to 85,873,850,333.24, 128,643,201,179.21 and 66,898,288,157.13

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Solution

The fourth proportional to 85,873,850,333.24, 128,643,201,179.21 and 66,898,288,157.13 is: 100,216,886,846.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,873,850,333.24 : 128,643,201,179.21 = 66,898,288,157.13 : x
  2. Step 2: Convert to fraction form
    85,873,850,333.24/128,643,201,179.21 = 66,898,288,157.13/x
  3. Step 3: Cross multiply
    85,873,850,333.24x = 128,643,201,179.21 × 66,898,288,157.13
  4. Step 4: Simplify right side
    85,873,850,333.24x = 8,606,009,941,942,436,102,144
  5. Step 5: Solve for x
    x = 8,606,009,941,942,436,102,144/85,873,850,333.24
  6. Step 6: Final answer
    x = 100,216,886,846.77

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1.5x scale

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.