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Finding the Fourth Proportional to 636,783.93, 878,761.71 and 382,135.32

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Solution

The fourth proportional to 636,783.93, 878,761.71 and 382,135.32 is: 527,346.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,783.93 : 878,761.71 = 382,135.32 : x
  2. Step 2: Convert to fraction form
    636,783.93/878,761.71 = 382,135.32/x
  3. Step 3: Cross multiply
    636,783.93x = 878,761.71 × 382,135.32
  4. Step 4: Simplify right side
    636,783.93x = 335,805,887,254.60
  5. Step 5: Solve for x
    x = 335,805,887,254.60/636,783.93
  6. Step 6: Final answer
    x = 527,346.67

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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.