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Finding the Fourth Proportional to 911,708.76, 1,258,233.84 and 503,890.24

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Solution

The fourth proportional to 911,708.76, 1,258,233.84 and 503,890.24 is: 695,410.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,708.76 : 1,258,233.84 = 503,890.24 : x
  2. Step 2: Convert to fraction form
    911,708.76/1,258,233.84 = 503,890.24/x
  3. Step 3: Cross multiply
    911,708.76x = 1,258,233.84 × 503,890.24
  4. Step 4: Simplify right side
    911,708.76x = 634,011,751,613.72
  5. Step 5: Solve for x
    x = 634,011,751,613.72/911,708.76
  6. Step 6: Final answer
    x = 695,410.40

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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.