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Finding the Fourth Proportional to 186,111.40, 279,054.48 and 83,509.92

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Solution

The fourth proportional to 186,111.40, 279,054.48 and 83,509.92 is: 125,214.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,111.40 : 279,054.48 = 83,509.92 : x
  2. Step 2: Convert to fraction form
    186,111.40/279,054.48 = 83,509.92/x
  3. Step 3: Cross multiply
    186,111.40x = 279,054.48 × 83,509.92
  4. Step 4: Simplify right side
    186,111.40x = 23,303,817,300.44
  5. Step 5: Solve for x
    x = 23,303,817,300.44/186,111.40
  6. Step 6: Final answer
    x = 125,214.35

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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.