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Finding the Fourth Proportional to 526,886.10, 727,101.90 and 285,168.60

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Solution

The fourth proportional to 526,886.10, 727,101.90 and 285,168.60 is: 393,532.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,886.10 : 727,101.90 = 285,168.60 : x
  2. Step 2: Convert to fraction form
    526,886.10/727,101.90 = 285,168.60/x
  3. Step 3: Cross multiply
    526,886.10x = 727,101.90 × 285,168.60
  4. Step 4: Simplify right side
    526,886.10x = 207,346,630,880.34
  5. Step 5: Solve for x
    x = 207,346,630,880.34/526,886.10
  6. Step 6: Final answer
    x = 393,532.17

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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.