Home / 209,871,312.56-289,622,797.80-117,057,802.76

Finding the Fourth Proportional to 209,871,312.56, 289,622,797.80 and 117,057,802.76

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Solution

The fourth proportional to 209,871,312.56, 289,622,797.80 and 117,057,802.76 is: 161,539,983.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,871,312.56 : 289,622,797.80 = 117,057,802.76 : x
  2. Step 2: Convert to fraction form
    209,871,312.56/289,622,797.80 = 117,057,802.76/x
  3. Step 3: Cross multiply
    209,871,312.56x = 289,622,797.80 × 117,057,802.76
  4. Step 4: Simplify right side
    209,871,312.56x = 33,902,608,339,671,764
  5. Step 5: Solve for x
    x = 33,902,608,339,671,764/209,871,312.56
  6. Step 6: Final answer
    x = 161,539,983.36

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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.