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Finding the Fourth Proportional to 346,378.80, 519,643.80 and 196,690.80

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Solution

The fourth proportional to 346,378.80, 519,643.80 and 196,690.80 is: 295,079.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,378.80 : 519,643.80 = 196,690.80 : x
  2. Step 2: Convert to fraction form
    346,378.80/519,643.80 = 196,690.80/x
  3. Step 3: Cross multiply
    346,378.80x = 519,643.80 × 196,690.80
  4. Step 4: Simplify right side
    346,378.80x = 102,209,154,737.04
  5. Step 5: Solve for x
    x = 102,209,154,737.04/346,378.80
  6. Step 6: Final answer
    x = 295,079.13

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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.