Home / 129,233,940.28-178,342,621.35-70,496,605.38

Finding the Fourth Proportional to 129,233,940.28, 178,342,621.35 and 70,496,605.38

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Solution

The fourth proportional to 129,233,940.28, 178,342,621.35 and 70,496,605.38 is: 97,285,197.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,233,940.28 : 178,342,621.35 = 70,496,605.38 : x
  2. Step 2: Convert to fraction form
    129,233,940.28/178,342,621.35 = 70,496,605.38/x
  3. Step 3: Cross multiply
    129,233,940.28x = 178,342,621.35 × 70,496,605.38
  4. Step 4: Simplify right side
    129,233,940.28x = 12,572,549,399,415,616
  5. Step 5: Solve for x
    x = 12,572,549,399,415,616/129,233,940.28
  6. Step 6: Final answer
    x = 97,285,197.47

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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.