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Finding the Fourth Proportional to 2,518,889, 3,778,894.80 and 921,416.72

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Solution

The fourth proportional to 2,518,889, 3,778,894.80 and 921,416.72 is: 1,382,330.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,518,889 : 3,778,894.80 = 921,416.72 : x
  2. Step 2: Convert to fraction form
    2,518,889/3,778,894.80 = 921,416.72/x
  3. Step 3: Cross multiply
    2,518,889x = 3,778,894.80 × 921,416.72
  4. Step 4: Simplify right side
    2,518,889x = 3,481,936,851,841.06
  5. Step 5: Solve for x
    x = 3,481,936,851,841.06/2,518,889
  6. Step 6: Final answer
    x = 1,382,330.41

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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.