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Finding the Fourth Proportional to 346,712.90, 520,069.35 and 325,717.70

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Solution

The fourth proportional to 346,712.90, 520,069.35 and 325,717.70 is: 488,576.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,712.90 : 520,069.35 = 325,717.70 : x
  2. Step 2: Convert to fraction form
    346,712.90/520,069.35 = 325,717.70/x
  3. Step 3: Cross multiply
    346,712.90x = 520,069.35 × 325,717.70
  4. Step 4: Simplify right side
    346,712.90x = 169,395,792,522.50
  5. Step 5: Solve for x
    x = 169,395,792,522.50/346,712.90
  6. Step 6: Final answer
    x = 488,576.55

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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.