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Finding the Fourth Proportional to 186,656.90, 279,985.35 and 112,007.30

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Solution

The fourth proportional to 186,656.90, 279,985.35 and 112,007.30 is: 168,010.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,656.90 : 279,985.35 = 112,007.30 : x
  2. Step 2: Convert to fraction form
    186,656.90/279,985.35 = 112,007.30/x
  3. Step 3: Cross multiply
    186,656.90x = 279,985.35 × 112,007.30
  4. Step 4: Simplify right side
    186,656.90x = 31,360,403,093.06
  5. Step 5: Solve for x
    x = 31,360,403,093.06/186,656.90
  6. Step 6: Final answer
    x = 168,010.95

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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.