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Finding the Fourth Proportional to 16,668,904.80, 25,003,357.20 and 10,258,370.40

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Solution

The fourth proportional to 16,668,904.80, 25,003,357.20 and 10,258,370.40 is: 15,387,555.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,668,904.80 : 25,003,357.20 = 10,258,370.40 : x
  2. Step 2: Convert to fraction form
    16,668,904.80/25,003,357.20 = 10,258,370.40/x
  3. Step 3: Cross multiply
    16,668,904.80x = 25,003,357.20 × 10,258,370.40
  4. Step 4: Simplify right side
    16,668,904.80x = 256,493,699,401,106.88
  5. Step 5: Solve for x
    x = 256,493,699,401,106.88/16,668,904.80
  6. Step 6: Final answer
    x = 15,387,555.60

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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.