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Finding the Fourth Proportional to 625,455.84, 863,130.56 and 338,975.86

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Solution

The fourth proportional to 625,455.84, 863,130.56 and 338,975.86 is: 467,787.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,455.84 : 863,130.56 = 338,975.86 : x
  2. Step 2: Convert to fraction form
    625,455.84/863,130.56 = 338,975.86/x
  3. Step 3: Cross multiply
    625,455.84x = 863,130.56 × 338,975.86
  4. Step 4: Simplify right side
    625,455.84x = 292,580,423,868.28
  5. Step 5: Solve for x
    x = 292,580,423,868.28/625,455.84
  6. Step 6: Final answer
    x = 467,787.50

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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.