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Finding the Fourth Proportional to 518,034.89, 714,698.54 and 313,938.59

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Solution

The fourth proportional to 518,034.89, 714,698.54 and 313,938.59 is: 433,120.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,034.89 : 714,698.54 = 313,938.59 : x
  2. Step 2: Convert to fraction form
    518,034.89/714,698.54 = 313,938.59/x
  3. Step 3: Cross multiply
    518,034.89x = 714,698.54 × 313,938.59
  4. Step 4: Simplify right side
    518,034.89x = 224,371,447,956.74
  5. Step 5: Solve for x
    x = 224,371,447,956.74/518,034.89
  6. Step 6: Final answer
    x = 433,120.34

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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.