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Finding the Fourth Proportional to 543,786.58, 750,123.12 and 505,298.76

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Solution

The fourth proportional to 543,786.58, 750,123.12 and 505,298.76 is: 697,031.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,786.58 : 750,123.12 = 505,298.76 : x
  2. Step 2: Convert to fraction form
    543,786.58/750,123.12 = 505,298.76/x
  3. Step 3: Cross multiply
    543,786.58x = 750,123.12 × 505,298.76
  4. Step 4: Simplify right side
    543,786.58x = 379,036,282,383.33
  5. Step 5: Solve for x
    x = 379,036,282,383.33/543,786.58
  6. Step 6: Final answer
    x = 697,031.33

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Double scale
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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.