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Finding the Fourth Proportional to 556,838.08, 768,437.60 and 330,528.96

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Solution

The fourth proportional to 556,838.08, 768,437.60 and 330,528.96 is: 456,130.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,838.08 : 768,437.60 = 330,528.96 : x
  2. Step 2: Convert to fraction form
    556,838.08/768,437.60 = 330,528.96/x
  3. Step 3: Cross multiply
    556,838.08x = 768,437.60 × 330,528.96
  4. Step 4: Simplify right side
    556,838.08x = 253,990,880,752.90
  5. Step 5: Solve for x
    x = 253,990,880,752.90/556,838.08
  6. Step 6: Final answer
    x = 456,130.59

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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.