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Finding the Fourth Proportional to 692,059.83, 955,042.70 and 390,253.83

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Solution

The fourth proportional to 692,059.83, 955,042.70 and 390,253.83 is: 538,550.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,059.83 : 955,042.70 = 390,253.83 : x
  2. Step 2: Convert to fraction form
    692,059.83/955,042.70 = 390,253.83/x
  3. Step 3: Cross multiply
    692,059.83x = 955,042.70 × 390,253.83
  4. Step 4: Simplify right side
    692,059.83x = 372,709,069,537.27
  5. Step 5: Solve for x
    x = 372,709,069,537.27/692,059.83
  6. Step 6: Final answer
    x = 538,550.36

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Similar ratio
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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.