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Finding the Fourth Proportional to 256,304.54, 353,688.98 and 143,124.86

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Solution

The fourth proportional to 256,304.54, 353,688.98 and 143,124.86 is: 197,506.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,304.54 : 353,688.98 = 143,124.86 : x
  2. Step 2: Convert to fraction form
    256,304.54/353,688.98 = 143,124.86/x
  3. Step 3: Cross multiply
    256,304.54x = 353,688.98 × 143,124.86
  4. Step 4: Simplify right side
    256,304.54x = 50,621,685,746.04
  5. Step 5: Solve for x
    x = 50,621,685,746.04/256,304.54
  6. Step 6: Final answer
    x = 197,506.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.