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Finding the Fourth Proportional to 541,328.40, 812,074.56 and 392,690.28

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Solution

The fourth proportional to 541,328.40, 812,074.56 and 392,690.28 is: 589,094.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,328.40 : 812,074.56 = 392,690.28 : x
  2. Step 2: Convert to fraction form
    541,328.40/812,074.56 = 392,690.28/x
  3. Step 3: Cross multiply
    541,328.40x = 812,074.56 × 392,690.28
  4. Step 4: Simplify right side
    541,328.40x = 318,893,786,347.28
  5. Step 5: Solve for x
    x = 318,893,786,347.28/541,328.40
  6. Step 6: Final answer
    x = 589,094.88

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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.