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Finding the Fourth Proportional to 578,632.90, 811,952.30 and 578,632.90

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Solution

The fourth proportional to 578,632.90, 811,952.30 and 578,632.90 is: 811,952.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,632.90 : 811,952.30 = 578,632.90 : x
  2. Step 2: Convert to fraction form
    578,632.90/811,952.30 = 578,632.90/x
  3. Step 3: Cross multiply
    578,632.90x = 811,952.30 × 578,632.90
  4. Step 4: Simplify right side
    578,632.90x = 469,822,314,010.67
  5. Step 5: Solve for x
    x = 469,822,314,010.67/578,632.90
  6. Step 6: Final answer
    x = 811,952.30

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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.