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Finding the Fourth Proportional to 353,612.30, 530,418.45 and 314,905.10

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Solution

The fourth proportional to 353,612.30, 530,418.45 and 314,905.10 is: 472,357.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,612.30 : 530,418.45 = 314,905.10 : x
  2. Step 2: Convert to fraction form
    353,612.30/530,418.45 = 314,905.10/x
  3. Step 3: Cross multiply
    353,612.30x = 530,418.45 × 314,905.10
  4. Step 4: Simplify right side
    353,612.30x = 167,031,475,039.10
  5. Step 5: Solve for x
    x = 167,031,475,039.10/353,612.30
  6. Step 6: Final answer
    x = 472,357.65

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1.5x scale

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.