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Finding the Fourth Proportional to 554,926.08, 765,711.36 and 316,416

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Solution

The fourth proportional to 554,926.08, 765,711.36 and 316,416 is: 436,604.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,926.08 : 765,711.36 = 316,416 : x
  2. Step 2: Convert to fraction form
    554,926.08/765,711.36 = 316,416/x
  3. Step 3: Cross multiply
    554,926.08x = 765,711.36 × 316,416
  4. Step 4: Simplify right side
    554,926.08x = 242,283,325,685.76
  5. Step 5: Solve for x
    x = 242,283,325,685.76/554,926.08
  6. Step 6: Final answer
    x = 436,604.68

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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.