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Finding the Fourth Proportional to 257,548.80, 386,323.20 and 238,886.40

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Solution

The fourth proportional to 257,548.80, 386,323.20 and 238,886.40 is: 358,329.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,548.80 : 386,323.20 = 238,886.40 : x
  2. Step 2: Convert to fraction form
    257,548.80/386,323.20 = 238,886.40/x
  3. Step 3: Cross multiply
    257,548.80x = 386,323.20 × 238,886.40
  4. Step 4: Simplify right side
    257,548.80x = 92,287,358,484.48
  5. Step 5: Solve for x
    x = 92,287,358,484.48/257,548.80
  6. Step 6: Final answer
    x = 358,329.60

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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.