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Finding the Fourth Proportional to 17,778,873.60, 26,668,310.40 and 12,039,310.80

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Solution

The fourth proportional to 17,778,873.60, 26,668,310.40 and 12,039,310.80 is: 18,058,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,778,873.60 : 26,668,310.40 = 12,039,310.80 : x
  2. Step 2: Convert to fraction form
    17,778,873.60/26,668,310.40 = 12,039,310.80/x
  3. Step 3: Cross multiply
    17,778,873.60x = 26,668,310.40 × 12,039,310.80
  4. Step 4: Simplify right side
    17,778,873.60x = 321,068,077,416,472.31
  5. Step 5: Solve for x
    x = 321,068,077,416,472.31/17,778,873.60
  6. Step 6: Final answer
    x = 18,058,966.20

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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.