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Finding the Fourth Proportional to 556,509.60, 835,225.20 and 257,450.40

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Solution

The fourth proportional to 556,509.60, 835,225.20 and 257,450.40 is: 386,388.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,509.60 : 835,225.20 = 257,450.40 : x
  2. Step 2: Convert to fraction form
    556,509.60/835,225.20 = 257,450.40/x
  3. Step 3: Cross multiply
    556,509.60x = 835,225.20 × 257,450.40
  4. Step 4: Simplify right side
    556,509.60x = 215,029,061,830.08
  5. Step 5: Solve for x
    x = 215,029,061,830.08/556,509.60
  6. Step 6: Final answer
    x = 386,388.77

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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.