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Finding the Fourth Proportional to 973,182.78, 1,342,995.11 and 543,479.20

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Solution

The fourth proportional to 973,182.78, 1,342,995.11 and 543,479.20 is: 750,002.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    973,182.78 : 1,342,995.11 = 543,479.20 : x
  2. Step 2: Convert to fraction form
    973,182.78/1,342,995.11 = 543,479.20/x
  3. Step 3: Cross multiply
    973,182.78x = 1,342,995.11 × 543,479.20
  4. Step 4: Simplify right side
    973,182.78x = 729,889,907,986.71
  5. Step 5: Solve for x
    x = 729,889,907,986.71/973,182.78
  6. Step 6: Final answer
    x = 750,002.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.