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Finding the Fourth Proportional to 630,643.60, 945,965.40 and 187,411.60

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Solution

The fourth proportional to 630,643.60, 945,965.40 and 187,411.60 is: 281,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,643.60 : 945,965.40 = 187,411.60 : x
  2. Step 2: Convert to fraction form
    630,643.60/945,965.40 = 187,411.60/x
  3. Step 3: Cross multiply
    630,643.60x = 945,965.40 × 187,411.60
  4. Step 4: Simplify right side
    630,643.60x = 177,284,889,158.64
  5. Step 5: Solve for x
    x = 177,284,889,158.64/630,643.60
  6. Step 6: Final answer
    x = 281,117.40

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Similar ratio
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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.