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Finding the Fourth Proportional to 401,782.76, 554,423.56 and 238,411.11

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Solution

The fourth proportional to 401,782.76, 554,423.56 and 238,411.11 is: 328,985.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,782.76 : 554,423.56 = 238,411.11 : x
  2. Step 2: Convert to fraction form
    401,782.76/554,423.56 = 238,411.11/x
  3. Step 3: Cross multiply
    401,782.76x = 554,423.56 × 238,411.11
  4. Step 4: Simplify right side
    401,782.76x = 132,180,736,349.75
  5. Step 5: Solve for x
    x = 132,180,736,349.75/401,782.76
  6. Step 6: Final answer
    x = 328,985.59

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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.