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Finding the Fourth Proportional to 636,703.11, 878,714.75 and 364,807.06

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Solution

The fourth proportional to 636,703.11, 878,714.75 and 364,807.06 is: 503,470.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,703.11 : 878,714.75 = 364,807.06 : x
  2. Step 2: Convert to fraction form
    636,703.11/878,714.75 = 364,807.06/x
  3. Step 3: Cross multiply
    636,703.11x = 878,714.75 × 364,807.06
  4. Step 4: Simplify right side
    636,703.11x = 320,561,344,526.14
  5. Step 5: Solve for x
    x = 320,561,344,526.14/636,703.11
  6. Step 6: Final answer
    x = 503,470.67

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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.