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Finding the Fourth Proportional to 636,079.53, 877,775.00 and 345,684.21

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Solution

The fourth proportional to 636,079.53, 877,775.00 and 345,684.21 is: 477,036.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,079.53 : 877,775.00 = 345,684.21 : x
  2. Step 2: Convert to fraction form
    636,079.53/877,775.00 = 345,684.21/x
  3. Step 3: Cross multiply
    636,079.53x = 877,775.00 × 345,684.21
  4. Step 4: Simplify right side
    636,079.53x = 303,432,952,412.67
  5. Step 5: Solve for x
    x = 303,432,952,412.67/636,079.53
  6. Step 6: Final answer
    x = 477,036.18

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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.