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Finding the Fourth Proportional to 711,804.80, 982,290.71 and 389,514.96

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Solution

The fourth proportional to 711,804.80, 982,290.71 and 389,514.96 is: 537,530.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,804.80 : 982,290.71 = 389,514.96 : x
  2. Step 2: Convert to fraction form
    711,804.80/982,290.71 = 389,514.96/x
  3. Step 3: Cross multiply
    711,804.80x = 982,290.71 × 389,514.96
  4. Step 4: Simplify right side
    711,804.80x = 382,616,929,810.72
  5. Step 5: Solve for x
    x = 382,616,929,810.72/711,804.80
  6. Step 6: Final answer
    x = 537,530.69

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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.