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Finding the Fourth Proportional to 438,683.12, 605,378.04 and 247,685.12

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Solution

The fourth proportional to 438,683.12, 605,378.04 and 247,685.12 is: 341,802.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,683.12 : 605,378.04 = 247,685.12 : x
  2. Step 2: Convert to fraction form
    438,683.12/605,378.04 = 247,685.12/x
  3. Step 3: Cross multiply
    438,683.12x = 605,378.04 × 247,685.12
  4. Step 4: Simplify right side
    438,683.12x = 149,943,132,482.77
  5. Step 5: Solve for x
    x = 149,943,132,482.77/438,683.12
  6. Step 6: Final answer
    x = 341,802.83

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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.