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Finding the Fourth Proportional to 623,197.72, 860,073.56 and 368,630.92

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Solution

The fourth proportional to 623,197.72, 860,073.56 and 368,630.92 is: 508,746.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,197.72 : 860,073.56 = 368,630.92 : x
  2. Step 2: Convert to fraction form
    623,197.72/860,073.56 = 368,630.92/x
  3. Step 3: Cross multiply
    623,197.72x = 860,073.56 × 368,630.92
  4. Step 4: Simplify right side
    623,197.72x = 317,049,707,690.48
  5. Step 5: Solve for x
    x = 317,049,707,690.48/623,197.72
  6. Step 6: Final answer
    x = 508,746.58

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Double scale
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Similar ratio
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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.