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Finding the Fourth Proportional to 911,706.30, 1,258,230.42 and 503,887.77

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Solution

The fourth proportional to 911,706.30, 1,258,230.42 and 503,887.77 is: 695,406.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,706.30 : 1,258,230.42 = 503,887.77 : x
  2. Step 2: Convert to fraction form
    911,706.30/1,258,230.42 = 503,887.77/x
  3. Step 3: Cross multiply
    911,706.30x = 1,258,230.42 × 503,887.77
  4. Step 4: Simplify right side
    911,706.30x = 634,006,920,479.96
  5. Step 5: Solve for x
    x = 634,006,920,479.96/911,706.30
  6. Step 6: Final answer
    x = 695,406.98

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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.