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Finding the Fourth Proportional to 346,879.66, 520,307.61 and 147,071.38

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Solution

The fourth proportional to 346,879.66, 520,307.61 and 147,071.38 is: 220,602.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,879.66 : 520,307.61 = 147,071.38 : x
  2. Step 2: Convert to fraction form
    346,879.66/520,307.61 = 147,071.38/x
  3. Step 3: Cross multiply
    346,879.66x = 520,307.61 × 147,071.38
  4. Step 4: Simplify right side
    346,879.66x = 76,522,358,227.20
  5. Step 5: Solve for x
    x = 76,522,358,227.20/346,879.66
  6. Step 6: Final answer
    x = 220,602.03

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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.