Home / 66,600,137.86-99,899,088.64-19,913,728.08

Finding the Fourth Proportional to 66,600,137.86, 99,899,088.64 and 19,913,728.08

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Solution

The fourth proportional to 66,600,137.86, 99,899,088.64 and 19,913,728.08 is: 29,870,257.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,600,137.86 : 99,899,088.64 = 19,913,728.08 : x
  2. Step 2: Convert to fraction form
    66,600,137.86/99,899,088.64 = 19,913,728.08/x
  3. Step 3: Cross multiply
    66,600,137.86x = 99,899,088.64 × 19,913,728.08
  4. Step 4: Simplify right side
    66,600,137.86x = 1,989,363,286,616,776.75
  5. Step 5: Solve for x
    x = 1,989,363,286,616,776.75/66,600,137.86
  6. Step 6: Final answer
    x = 29,870,257.79

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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.