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Finding the Fourth Proportional to 346,156.52, 518,707.74 and 256,991.72

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Solution

The fourth proportional to 346,156.52, 518,707.74 and 256,991.72 is: 385,096.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,156.52 : 518,707.74 = 256,991.72 : x
  2. Step 2: Convert to fraction form
    346,156.52/518,707.74 = 256,991.72/x
  3. Step 3: Cross multiply
    346,156.52x = 518,707.74 × 256,991.72
  4. Step 4: Simplify right side
    346,156.52x = 133,303,594,279.91
  5. Step 5: Solve for x
    x = 133,303,594,279.91/346,156.52
  6. Step 6: Final answer
    x = 385,096.30

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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.