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Finding the Fourth Proportional to 676,701.36, 933,878.88 and 386,391.54

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Solution

The fourth proportional to 676,701.36, 933,878.88 and 386,391.54 is: 533,238.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,701.36 : 933,878.88 = 386,391.54 : x
  2. Step 2: Convert to fraction form
    676,701.36/933,878.88 = 386,391.54/x
  3. Step 3: Cross multiply
    676,701.36x = 933,878.88 × 386,391.54
  4. Step 4: Simplify right side
    676,701.36x = 360,842,898,616.68
  5. Step 5: Solve for x
    x = 360,842,898,616.68/676,701.36
  6. Step 6: Final answer
    x = 533,238.03

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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.