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Finding the Fourth Proportional to 191,805.90, 287,708.85 and 152,148.30

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Solution

The fourth proportional to 191,805.90, 287,708.85 and 152,148.30 is: 228,222.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,805.90 : 287,708.85 = 152,148.30 : x
  2. Step 2: Convert to fraction form
    191,805.90/287,708.85 = 152,148.30/x
  3. Step 3: Cross multiply
    191,805.90x = 287,708.85 × 152,148.30
  4. Step 4: Simplify right side
    191,805.90x = 43,774,412,422.46
  5. Step 5: Solve for x
    x = 43,774,412,422.46/191,805.90
  6. Step 6: Final answer
    x = 228,222.45

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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.