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Finding the Fourth Proportional to 619,573.80, 928,194.30 and 319,031.40

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Solution

The fourth proportional to 619,573.80, 928,194.30 and 319,031.40 is: 477,946.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,573.80 : 928,194.30 = 319,031.40 : x
  2. Step 2: Convert to fraction form
    619,573.80/928,194.30 = 319,031.40/x
  3. Step 3: Cross multiply
    619,573.80x = 928,194.30 × 319,031.40
  4. Step 4: Simplify right side
    619,573.80x = 296,123,127,001.02
  5. Step 5: Solve for x
    x = 296,123,127,001.02/619,573.80
  6. Step 6: Final answer
    x = 477,946.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.