Home / 86,782,583.55-129,407,141.38-86,003,661.63

Finding the Fourth Proportional to 86,782,583.55, 129,407,141.38 and 86,003,661.63

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Solution

The fourth proportional to 86,782,583.55, 129,407,141.38 and 86,003,661.63 is: 128,245,640.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,782,583.55 : 129,407,141.38 = 86,003,661.63 : x
  2. Step 2: Convert to fraction form
    86,782,583.55/129,407,141.38 = 86,003,661.63/x
  3. Step 3: Cross multiply
    86,782,583.55x = 129,407,141.38 × 86,003,661.63
  4. Step 4: Simplify right side
    86,782,583.55x = 11,129,487,999,536,082
  5. Step 5: Solve for x
    x = 11,129,487,999,536,082/86,782,583.55
  6. Step 6: Final answer
    x = 128,245,640.36

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.