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Finding the Fourth Proportional to 830,424.80, 1,243,668.90 and 830,424.80

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Solution

The fourth proportional to 830,424.80, 1,243,668.90 and 830,424.80 is: 1,243,668.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,424.80 : 1,243,668.90 = 830,424.80 : x
  2. Step 2: Convert to fraction form
    830,424.80/1,243,668.90 = 830,424.80/x
  3. Step 3: Cross multiply
    830,424.80x = 1,243,668.90 × 830,424.80
  4. Step 4: Simplify right side
    830,424.80x = 1,032,773,497,548.72
  5. Step 5: Solve for x
    x = 1,032,773,497,548.72/830,424.80
  6. Step 6: Final answer
    x = 1,243,668.90

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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.