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Finding the Fourth Proportional to 911,918.13, 1,258,620.57 and 601,274.22

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Solution

The fourth proportional to 911,918.13, 1,258,620.57 and 601,274.22 is: 829,872.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,918.13 : 1,258,620.57 = 601,274.22 : x
  2. Step 2: Convert to fraction form
    911,918.13/1,258,620.57 = 601,274.22/x
  3. Step 3: Cross multiply
    911,918.13x = 1,258,620.57 × 601,274.22
  4. Step 4: Simplify right side
    911,918.13x = 756,776,101,502.71
  5. Step 5: Solve for x
    x = 756,776,101,502.71/911,918.13
  6. Step 6: Final answer
    x = 829,872.85

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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.