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Finding the Fourth Proportional to 611,976.60, 917,964.72 and 191,252.48

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Solution

The fourth proportional to 611,976.60, 917,964.72 and 191,252.48 is: 286,878.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,976.60 : 917,964.72 = 191,252.48 : x
  2. Step 2: Convert to fraction form
    611,976.60/917,964.72 = 191,252.48/x
  3. Step 3: Cross multiply
    611,976.60x = 917,964.72 × 191,252.48
  4. Step 4: Simplify right side
    611,976.60x = 175,563,029,252.51
  5. Step 5: Solve for x
    x = 175,563,029,252.51/611,976.60
  6. Step 6: Final answer
    x = 286,878.66

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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.