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Finding the Fourth Proportional to 151,018.67, 208,411.11 and 83,040.81

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Solution

The fourth proportional to 151,018.67, 208,411.11 and 83,040.81 is: 114,599.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,018.67 : 208,411.11 = 83,040.81 : x
  2. Step 2: Convert to fraction form
    151,018.67/208,411.11 = 83,040.81/x
  3. Step 3: Cross multiply
    151,018.67x = 208,411.11 × 83,040.81
  4. Step 4: Simplify right side
    151,018.67x = 17,306,627,387.40
  5. Step 5: Solve for x
    x = 17,306,627,387.40/151,018.67
  6. Step 6: Final answer
    x = 114,599.26

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1.5x scale

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.