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Finding the Fourth Proportional to 530,857.70, 745,300.30 and 530,857.70

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Solution

The fourth proportional to 530,857.70, 745,300.30 and 530,857.70 is: 745,300.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,857.70 : 745,300.30 = 530,857.70 : x
  2. Step 2: Convert to fraction form
    530,857.70/745,300.30 = 530,857.70/x
  3. Step 3: Cross multiply
    530,857.70x = 745,300.30 × 530,857.70
  4. Step 4: Simplify right side
    530,857.70x = 395,648,403,067.31
  5. Step 5: Solve for x
    x = 395,648,403,067.31/530,857.70
  6. Step 6: Final answer
    x = 745,300.30

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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.