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Finding the Fourth Proportional to 346,878.66, 520,306.11 and 147,070.38

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Solution

The fourth proportional to 346,878.66, 520,306.11 and 147,070.38 is: 220,600.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,878.66 : 520,306.11 = 147,070.38 : x
  2. Step 2: Convert to fraction form
    346,878.66/520,306.11 = 147,070.38/x
  3. Step 3: Cross multiply
    346,878.66x = 520,306.11 × 147,070.38
  4. Step 4: Simplify right side
    346,878.66x = 76,521,617,314.02
  5. Step 5: Solve for x
    x = 76,521,617,314.02/346,878.66
  6. Step 6: Final answer
    x = 220,600.53

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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.