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Finding the Fourth Proportional to 661,590.72, 992,517.20 and 188,294.72

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Solution

The fourth proportional to 661,590.72, 992,517.20 and 188,294.72 is: 282,479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,590.72 : 992,517.20 = 188,294.72 : x
  2. Step 2: Convert to fraction form
    661,590.72/992,517.20 = 188,294.72/x
  3. Step 3: Cross multiply
    661,590.72x = 992,517.20 × 188,294.72
  4. Step 4: Simplify right side
    661,590.72x = 186,885,748,269.18
  5. Step 5: Solve for x
    x = 186,885,748,269.18/661,590.72
  6. Step 6: Final answer
    x = 282,479.40

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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.