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Finding the Fourth Proportional to 543,264.47, 815,041.62 and 188,278.19

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Solution

The fourth proportional to 543,264.47, 815,041.62 and 188,278.19 is: 282,467.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,264.47 : 815,041.62 = 188,278.19 : x
  2. Step 2: Convert to fraction form
    543,264.47/815,041.62 = 188,278.19/x
  3. Step 3: Cross multiply
    543,264.47x = 815,041.62 × 188,278.19
  4. Step 4: Simplify right side
    543,264.47x = 153,454,556,913.06
  5. Step 5: Solve for x
    x = 153,454,556,913.06/543,264.47
  6. Step 6: Final answer
    x = 282,467.50

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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.