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Finding the Fourth Proportional to 503,813.80, 755,720.70 and 503,813.80

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Solution

The fourth proportional to 503,813.80, 755,720.70 and 503,813.80 is: 755,720.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,813.80 : 755,720.70 = 503,813.80 : x
  2. Step 2: Convert to fraction form
    503,813.80/755,720.70 = 503,813.80/x
  3. Step 3: Cross multiply
    503,813.80x = 755,720.70 × 503,813.80
  4. Step 4: Simplify right side
    503,813.80x = 380,742,517,605.66
  5. Step 5: Solve for x
    x = 380,742,517,605.66/503,813.80
  6. Step 6: Final answer
    x = 755,720.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.