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Finding the Fourth Proportional to 661,905.16, 992,730.74 and 257,096.92

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Solution

The fourth proportional to 661,905.16, 992,730.74 and 257,096.92 is: 385,596.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,905.16 : 992,730.74 = 257,096.92 : x
  2. Step 2: Convert to fraction form
    661,905.16/992,730.74 = 257,096.92/x
  3. Step 3: Cross multiply
    661,905.16x = 992,730.74 × 257,096.92
  4. Step 4: Simplify right side
    661,905.16x = 255,228,015,643.32
  5. Step 5: Solve for x
    x = 255,228,015,643.32/661,905.16
  6. Step 6: Final answer
    x = 385,596.05

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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.