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Finding the Fourth Proportional to 289,587.76, 399,631.25 and 176,410.51

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Solution

The fourth proportional to 289,587.76, 399,631.25 and 176,410.51 is: 243,446.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,587.76 : 399,631.25 = 176,410.51 : x
  2. Step 2: Convert to fraction form
    289,587.76/399,631.25 = 176,410.51/x
  3. Step 3: Cross multiply
    289,587.76x = 399,631.25 × 176,410.51
  4. Step 4: Simplify right side
    289,587.76x = 70,499,152,066.39
  5. Step 5: Solve for x
    x = 70,499,152,066.39/289,587.76
  6. Step 6: Final answer
    x = 243,446.59

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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.