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Finding the Fourth Proportional to 672,798.16, 928,170.12 and 386,252.56

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Solution

The fourth proportional to 672,798.16, 928,170.12 and 386,252.56 is: 532,861.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,798.16 : 928,170.12 = 386,252.56 : x
  2. Step 2: Convert to fraction form
    672,798.16/928,170.12 = 386,252.56/x
  3. Step 3: Cross multiply
    672,798.16x = 928,170.12 × 386,252.56
  4. Step 4: Simplify right side
    672,798.16x = 358,508,084,965.51
  5. Step 5: Solve for x
    x = 358,508,084,965.51/672,798.16
  6. Step 6: Final answer
    x = 532,861.27

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Double scale
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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.