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Finding the Fourth Proportional to 879,602.94, 1,213,854.39 and 477,194.94

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Solution

The fourth proportional to 879,602.94, 1,213,854.39 and 477,194.94 is: 658,530.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,602.94 : 1,213,854.39 = 477,194.94 : x
  2. Step 2: Convert to fraction form
    879,602.94/1,213,854.39 = 477,194.94/x
  3. Step 3: Cross multiply
    879,602.94x = 1,213,854.39 × 477,194.94
  4. Step 4: Simplify right side
    879,602.94x = 579,245,172,804.79
  5. Step 5: Solve for x
    x = 579,245,172,804.79/879,602.94
  6. Step 6: Final answer
    x = 658,530.28

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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.