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Finding the Fourth Proportional to 418,197.76, 576,985.80 and 236,880.88

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Solution

The fourth proportional to 418,197.76, 576,985.80 and 236,880.88 is: 326,823.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,197.76 : 576,985.80 = 236,880.88 : x
  2. Step 2: Convert to fraction form
    418,197.76/576,985.80 = 236,880.88/x
  3. Step 3: Cross multiply
    418,197.76x = 576,985.80 × 236,880.88
  4. Step 4: Simplify right side
    418,197.76x = 136,676,904,051.50
  5. Step 5: Solve for x
    x = 136,676,904,051.50/418,197.76
  6. Step 6: Final answer
    x = 326,823.62

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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.