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Finding the Fourth Proportional to 543,240.78, 749,681.65 and 298,248.33

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Solution

The fourth proportional to 543,240.78, 749,681.65 and 298,248.33 is: 411,587.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,240.78 : 749,681.65 = 298,248.33 : x
  2. Step 2: Convert to fraction form
    543,240.78/749,681.65 = 298,248.33/x
  3. Step 3: Cross multiply
    543,240.78x = 749,681.65 × 298,248.33
  4. Step 4: Simplify right side
    543,240.78x = 223,591,299,950.13
  5. Step 5: Solve for x
    x = 223,591,299,950.13/543,240.78
  6. Step 6: Final answer
    x = 411,587.84

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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.