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Finding the Fourth Proportional to 713,364.78, 984,417.01 and 386,670.78

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Solution

The fourth proportional to 713,364.78, 984,417.01 and 386,670.78 is: 533,591.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,364.78 : 984,417.01 = 386,670.78 : x
  2. Step 2: Convert to fraction form
    713,364.78/984,417.01 = 386,670.78/x
  3. Step 3: Cross multiply
    713,364.78x = 984,417.01 × 386,670.78
  4. Step 4: Simplify right side
    713,364.78x = 380,645,289,893.74
  5. Step 5: Solve for x
    x = 380,645,289,893.74/713,364.78
  6. Step 6: Final answer
    x = 533,591.37

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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.