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Finding the Fourth Proportional to 713,451.72, 984,537.06 and 391,154.70

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Solution

The fourth proportional to 713,451.72, 984,537.06 and 391,154.70 is: 539,779.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,451.72 : 984,537.06 = 391,154.70 : x
  2. Step 2: Convert to fraction form
    713,451.72/984,537.06 = 391,154.70/x
  3. Step 3: Cross multiply
    713,451.72x = 984,537.06 × 391,154.70
  4. Step 4: Simplify right side
    713,451.72x = 385,106,298,343.18
  5. Step 5: Solve for x
    x = 385,106,298,343.18/713,451.72
  6. Step 6: Final answer
    x = 539,779.06

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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.