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Finding the Fourth Proportional to 612,230.40, 918,406.08 and 191,514.24

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Solution

The fourth proportional to 612,230.40, 918,406.08 and 191,514.24 is: 287,290.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,230.40 : 918,406.08 = 191,514.24 : x
  2. Step 2: Convert to fraction form
    612,230.40/918,406.08 = 191,514.24/x
  3. Step 3: Cross multiply
    612,230.40x = 918,406.08 × 191,514.24
  4. Step 4: Simplify right side
    612,230.40x = 175,887,842,422.58
  5. Step 5: Solve for x
    x = 175,887,842,422.58/612,230.40
  6. Step 6: Final answer
    x = 287,290.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.