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Finding the Fourth Proportional to 610,611.71, 916,000.86 and 211,145.23

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Solution

The fourth proportional to 610,611.71, 916,000.86 and 211,145.23 is: 316,746.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,611.71 : 916,000.86 = 211,145.23 : x
  2. Step 2: Convert to fraction form
    610,611.71/916,000.86 = 211,145.23/x
  3. Step 3: Cross multiply
    610,611.71x = 916,000.86 × 211,145.23
  4. Step 4: Simplify right side
    610,611.71x = 193,409,207,684.89
  5. Step 5: Solve for x
    x = 193,409,207,684.89/610,611.71
  6. Step 6: Final answer
    x = 316,746.64

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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.