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Finding the Fourth Proportional to 346,687.90, 520,031.85 and 169,308.70

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Solution

The fourth proportional to 346,687.90, 520,031.85 and 169,308.70 is: 253,963.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,687.90 : 520,031.85 = 169,308.70 : x
  2. Step 2: Convert to fraction form
    346,687.90/520,031.85 = 169,308.70/x
  3. Step 3: Cross multiply
    346,687.90x = 520,031.85 × 169,308.70
  4. Step 4: Simplify right side
    346,687.90x = 88,045,916,482.10
  5. Step 5: Solve for x
    x = 88,045,916,482.10/346,687.90
  6. Step 6: Final answer
    x = 253,963.05

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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.