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Finding the Fourth Proportional to 383,114.86, 528,130.93 and 245,274.08

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Solution

The fourth proportional to 383,114.86, 528,130.93 and 245,274.08 is: 338,114.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,114.86 : 528,130.93 = 245,274.08 : x
  2. Step 2: Convert to fraction form
    383,114.86/528,130.93 = 245,274.08/x
  3. Step 3: Cross multiply
    383,114.86x = 528,130.93 × 245,274.08
  4. Step 4: Simplify right side
    383,114.86x = 129,536,828,281.89
  5. Step 5: Solve for x
    x = 129,536,828,281.89/383,114.86
  6. Step 6: Final answer
    x = 338,114.86

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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.