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Finding the Fourth Proportional to 565,804.17, 780,794.17 and 311,155.36

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Solution

The fourth proportional to 565,804.17, 780,794.17 and 311,155.36 is: 429,385.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,804.17 : 780,794.17 = 311,155.36 : x
  2. Step 2: Convert to fraction form
    565,804.17/780,794.17 = 311,155.36/x
  3. Step 3: Cross multiply
    565,804.17x = 780,794.17 × 311,155.36
  4. Step 4: Simplify right side
    565,804.17x = 242,948,291,052.25
  5. Step 5: Solve for x
    x = 242,948,291,052.25/565,804.17
  6. Step 6: Final answer
    x = 429,385.83

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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.