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Finding the Fourth Proportional to 346,712.32, 520,068.48 and 122,019.84

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Solution

The fourth proportional to 346,712.32, 520,068.48 and 122,019.84 is: 183,029.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,712.32 : 520,068.48 = 122,019.84 : x
  2. Step 2: Convert to fraction form
    346,712.32/520,068.48 = 122,019.84/x
  3. Step 3: Cross multiply
    346,712.32x = 520,068.48 × 122,019.84
  4. Step 4: Simplify right side
    346,712.32x = 63,458,672,718.64
  5. Step 5: Solve for x
    x = 63,458,672,718.64/346,712.32
  6. Step 6: Final answer
    x = 183,029.76

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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.