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Finding the Fourth Proportional to 438,333.35, 605,000.75 and 257,103.68

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Solution

The fourth proportional to 438,333.35, 605,000.75 and 257,103.68 is: 354,862.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,333.35 : 605,000.75 = 257,103.68 : x
  2. Step 2: Convert to fraction form
    438,333.35/605,000.75 = 257,103.68/x
  3. Step 3: Cross multiply
    438,333.35x = 605,000.75 × 257,103.68
  4. Step 4: Simplify right side
    438,333.35x = 155,547,914,917.24
  5. Step 5: Solve for x
    x = 155,547,914,917.24/438,333.35
  6. Step 6: Final answer
    x = 354,862.15

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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.