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Finding the Fourth Proportional to 186,730.60, 279,804.30 and 156,987.40

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Solution

The fourth proportional to 186,730.60, 279,804.30 and 156,987.40 is: 235,235.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,730.60 : 279,804.30 = 156,987.40 : x
  2. Step 2: Convert to fraction form
    186,730.60/279,804.30 = 156,987.40/x
  3. Step 3: Cross multiply
    186,730.60x = 279,804.30 × 156,987.40
  4. Step 4: Simplify right side
    186,730.60x = 43,925,749,565.82
  5. Step 5: Solve for x
    x = 43,925,749,565.82/186,730.60
  6. Step 6: Final answer
    x = 235,235.95

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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.