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Finding the Fourth Proportional to 291,073, 401,699.46 and 176,430.76

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Solution

The fourth proportional to 291,073, 401,699.46 and 176,430.76 is: 243,485.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,073 : 401,699.46 = 176,430.76 : x
  2. Step 2: Convert to fraction form
    291,073/401,699.46 = 176,430.76/x
  3. Step 3: Cross multiply
    291,073x = 401,699.46 × 176,430.76
  4. Step 4: Simplify right side
    291,073x = 70,872,141,019.39
  5. Step 5: Solve for x
    x = 70,872,141,019.39/291,073
  6. Step 6: Final answer
    x = 243,485.80

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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.