Home / 261,066.30-391,599.75-71,528.28

Finding the Fourth Proportional to 261,066.30, 391,599.75 and 71,528.28

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Solution

The fourth proportional to 261,066.30, 391,599.75 and 71,528.28 is: 107,292.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,066.30 : 391,599.75 = 71,528.28 : x
  2. Step 2: Convert to fraction form
    261,066.30/391,599.75 = 71,528.28/x
  3. Step 3: Cross multiply
    261,066.30x = 391,599.75 × 71,528.28
  4. Step 4: Simplify right side
    261,066.30x = 28,010,456,565.93
  5. Step 5: Solve for x
    x = 28,010,456,565.93/261,066.30
  6. Step 6: Final answer
    x = 107,292.50

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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.