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Finding the Fourth Proportional to 525,000.79, 724,555.41 and 321,187.37

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Solution

The fourth proportional to 525,000.79, 724,555.41 and 321,187.37 is: 443,271.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,000.79 : 724,555.41 = 321,187.37 : x
  2. Step 2: Convert to fraction form
    525,000.79/724,555.41 = 321,187.37/x
  3. Step 3: Cross multiply
    525,000.79x = 724,555.41 × 321,187.37
  4. Step 4: Simplify right side
    525,000.79x = 232,718,046,557.17
  5. Step 5: Solve for x
    x = 232,718,046,557.17/525,000.79
  6. Step 6: Final answer
    x = 443,271.81

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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.