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Finding the Fourth Proportional to 515,516.40, 773,274.60 and 358,052.40

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Solution

The fourth proportional to 515,516.40, 773,274.60 and 358,052.40 is: 537,078.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,516.40 : 773,274.60 = 358,052.40 : x
  2. Step 2: Convert to fraction form
    515,516.40/773,274.60 = 358,052.40/x
  3. Step 3: Cross multiply
    515,516.40x = 773,274.60 × 358,052.40
  4. Step 4: Simplify right side
    515,516.40x = 276,872,826,389.04
  5. Step 5: Solve for x
    x = 276,872,826,389.04/515,516.40
  6. Step 6: Final answer
    x = 537,078.60

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Similar ratio
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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.