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Finding the Fourth Proportional to 261,563.68, 392,253.28 and 84,010.72

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Solution

The fourth proportional to 261,563.68, 392,253.28 and 84,010.72 is: 125,986.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,563.68 : 392,253.28 = 84,010.72 : x
  2. Step 2: Convert to fraction form
    261,563.68/392,253.28 = 84,010.72/x
  3. Step 3: Cross multiply
    261,563.68x = 392,253.28 × 84,010.72
  4. Step 4: Simplify right side
    261,563.68x = 32,953,480,475.16
  5. Step 5: Solve for x
    x = 32,953,480,475.16/261,563.68
  6. Step 6: Final answer
    x = 125,986.45

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1.5x scale

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.