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Finding the Fourth Proportional to 401,294.15, 553,332.43 and 255,905.63

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Solution

The fourth proportional to 401,294.15, 553,332.43 and 255,905.63 is: 352,860.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,294.15 : 553,332.43 = 255,905.63 : x
  2. Step 2: Convert to fraction form
    401,294.15/553,332.43 = 255,905.63/x
  3. Step 3: Cross multiply
    401,294.15x = 553,332.43 × 255,905.63
  4. Step 4: Simplify right side
    401,294.15x = 141,600,884,098.58
  5. Step 5: Solve for x
    x = 141,600,884,098.58/401,294.15
  6. Step 6: Final answer
    x = 352,860.57

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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.