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Finding the Fourth Proportional to 465,510.48, 642,459.24 and 261,561.84

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Solution

The fourth proportional to 465,510.48, 642,459.24 and 261,561.84 is: 360,986.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,510.48 : 642,459.24 = 261,561.84 : x
  2. Step 2: Convert to fraction form
    465,510.48/642,459.24 = 261,561.84/x
  3. Step 3: Cross multiply
    465,510.48x = 642,459.24 × 261,561.84
  4. Step 4: Simplify right side
    465,510.48x = 168,042,820,939.40
  5. Step 5: Solve for x
    x = 168,042,820,939.40/465,510.48
  6. Step 6: Final answer
    x = 360,986.12

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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.