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Finding the Fourth Proportional to 606,621.10, 909,931.65 and 185,842.30

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Solution

The fourth proportional to 606,621.10, 909,931.65 and 185,842.30 is: 278,763.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,621.10 : 909,931.65 = 185,842.30 : x
  2. Step 2: Convert to fraction form
    606,621.10/909,931.65 = 185,842.30/x
  3. Step 3: Cross multiply
    606,621.10x = 909,931.65 × 185,842.30
  4. Step 4: Simplify right side
    606,621.10x = 169,103,790,678.80
  5. Step 5: Solve for x
    x = 169,103,790,678.80/606,621.10
  6. Step 6: Final answer
    x = 278,763.45

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Double scale
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Similar ratio
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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.