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Finding the Fourth Proportional to 186,290.74, 279,279.36 and 81,030.44

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Solution

The fourth proportional to 186,290.74, 279,279.36 and 81,030.44 is: 121,477.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,290.74 : 279,279.36 = 81,030.44 : x
  2. Step 2: Convert to fraction form
    186,290.74/279,279.36 = 81,030.44/x
  3. Step 3: Cross multiply
    186,290.74x = 279,279.36 × 81,030.44
  4. Step 4: Simplify right side
    186,290.74x = 22,630,129,423.72
  5. Step 5: Solve for x
    x = 22,630,129,423.72/186,290.74
  6. Step 6: Final answer
    x = 121,477.48

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1.5x scale

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.