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Finding the Fourth Proportional to 438,688.81, 605,401.58 and 247,703.58

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Solution

The fourth proportional to 438,688.81, 605,401.58 and 247,703.58 is: 341,837.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,688.81 : 605,401.58 = 247,703.58 : x
  2. Step 2: Convert to fraction form
    438,688.81/605,401.58 = 247,703.58/x
  3. Step 3: Cross multiply
    438,688.81x = 605,401.58 × 247,703.58
  4. Step 4: Simplify right side
    438,688.81x = 149,960,138,703.66
  5. Step 5: Solve for x
    x = 149,960,138,703.66/438,688.81
  6. Step 6: Final answer
    x = 341,837.16

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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.