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Finding the Fourth Proportional to 713,408.04, 984,502.84 and 391,111.22

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Solution

The fourth proportional to 713,408.04, 984,502.84 and 391,111.22 is: 539,733.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,408.04 : 984,502.84 = 391,111.22 : x
  2. Step 2: Convert to fraction form
    713,408.04/984,502.84 = 391,111.22/x
  3. Step 3: Cross multiply
    713,408.04x = 984,502.84 × 391,111.22
  4. Step 4: Simplify right side
    713,408.04x = 385,050,106,845.87
  5. Step 5: Solve for x
    x = 385,050,106,845.87/713,408.04
  6. Step 6: Final answer
    x = 539,733.34

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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.