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Finding the Fourth Proportional to 611,989.92, 911,833.87 and 577,611.66

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Solution

The fourth proportional to 611,989.92, 911,833.87 and 577,611.66 is: 860,612.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,989.92 : 911,833.87 = 577,611.66 : x
  2. Step 2: Convert to fraction form
    611,989.92/911,833.87 = 577,611.66/x
  3. Step 3: Cross multiply
    611,989.92x = 911,833.87 × 577,611.66
  4. Step 4: Simplify right side
    611,989.92x = 526,685,875,294.92
  5. Step 5: Solve for x
    x = 526,685,875,294.92/611,989.92
  6. Step 6: Final answer
    x = 860,612.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.