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Finding the Fourth Proportional to 569,622.83, 786,420.60 and 355,053.53

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Solution

The fourth proportional to 569,622.83, 786,420.60 and 355,053.53 is: 490,186.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,622.83 : 786,420.60 = 355,053.53 : x
  2. Step 2: Convert to fraction form
    569,622.83/786,420.60 = 355,053.53/x
  3. Step 3: Cross multiply
    569,622.83x = 786,420.60 × 355,053.53
  4. Step 4: Simplify right side
    569,622.83x = 279,221,406,305.70
  5. Step 5: Solve for x
    x = 279,221,406,305.70/569,622.83
  6. Step 6: Final answer
    x = 490,186.47

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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.