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Finding the Fourth Proportional to 543,113.40, 761,933.40 and 543,113.40

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Solution

The fourth proportional to 543,113.40, 761,933.40 and 543,113.40 is: 761,933.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,113.40 : 761,933.40 = 543,113.40 : x
  2. Step 2: Convert to fraction form
    543,113.40/761,933.40 = 543,113.40/x
  3. Step 3: Cross multiply
    543,113.40x = 761,933.40 × 543,113.40
  4. Step 4: Simplify right side
    543,113.40x = 413,816,239,447.56
  5. Step 5: Solve for x
    x = 413,816,239,447.56/543,113.40
  6. Step 6: Final answer
    x = 761,933.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.