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Finding the Fourth Proportional to 556,914.52, 768,359.10 and 315,173.08

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Solution

The fourth proportional to 556,914.52, 768,359.10 and 315,173.08 is: 434,835.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,914.52 : 768,359.10 = 315,173.08 : x
  2. Step 2: Convert to fraction form
    556,914.52/768,359.10 = 315,173.08/x
  3. Step 3: Cross multiply
    556,914.52x = 768,359.10 × 315,173.08
  4. Step 4: Simplify right side
    556,914.52x = 242,166,104,093.03
  5. Step 5: Solve for x
    x = 242,166,104,093.03/556,914.52
  6. Step 6: Final answer
    x = 434,835.32

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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.