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Finding the Fourth Proportional to 713,451.51, 984,562.76 and 391,154.74

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Solution

The fourth proportional to 713,451.51, 984,562.76 and 391,154.74 is: 539,793.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,451.51 : 984,562.76 = 391,154.74 : x
  2. Step 2: Convert to fraction form
    713,451.51/984,562.76 = 391,154.74/x
  3. Step 3: Cross multiply
    713,451.51x = 984,562.76 × 391,154.74
  4. Step 4: Simplify right side
    713,451.51x = 385,116,388,917.96
  5. Step 5: Solve for x
    x = 385,116,388,917.96/713,451.51
  6. Step 6: Final answer
    x = 539,793.36

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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.