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Finding the Fourth Proportional to 611,698.88, 917,548.32 and 191,010.80

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Solution

The fourth proportional to 611,698.88, 917,548.32 and 191,010.80 is: 286,516.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,698.88 : 917,548.32 = 191,010.80 : x
  2. Step 2: Convert to fraction form
    611,698.88/917,548.32 = 191,010.80/x
  3. Step 3: Cross multiply
    611,698.88x = 917,548.32 × 191,010.80
  4. Step 4: Simplify right side
    611,698.88x = 175,261,638,641.86
  5. Step 5: Solve for x
    x = 175,261,638,641.86/611,698.88
  6. Step 6: Final answer
    x = 286,516.20

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Similar ratio
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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.