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Finding the Fourth Proportional to 534,415.59, 737,498.72 and 319,555.66

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Solution

The fourth proportional to 534,415.59, 737,498.72 and 319,555.66 is: 440,989.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,415.59 : 737,498.72 = 319,555.66 : x
  2. Step 2: Convert to fraction form
    534,415.59/737,498.72 = 319,555.66/x
  3. Step 3: Cross multiply
    534,415.59x = 737,498.72 × 319,555.66
  4. Step 4: Simplify right side
    534,415.59x = 235,671,890,218.76
  5. Step 5: Solve for x
    x = 235,671,890,218.76/534,415.59
  6. Step 6: Final answer
    x = 440,989.92

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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.