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Finding the Fourth Proportional to 636,109.58, 877,816.50 and 345,714.32

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Solution

The fourth proportional to 636,109.58, 877,816.50 and 345,714.32 is: 477,077.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,109.58 : 877,816.50 = 345,714.32 : x
  2. Step 2: Convert to fraction form
    636,109.58/877,816.50 = 345,714.32/x
  3. Step 3: Cross multiply
    636,109.58x = 877,816.50 × 345,714.32
  4. Step 4: Simplify right side
    636,109.58x = 303,473,734,382.28
  5. Step 5: Solve for x
    x = 303,473,734,382.28/636,109.58
  6. Step 6: Final answer
    x = 477,077.76

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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.