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Finding the Fourth Proportional to 611,777.97, 917,760.23 and 312,095.07

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Solution

The fourth proportional to 611,777.97, 917,760.23 and 312,095.07 is: 468,190.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,777.97 : 917,760.23 = 312,095.07 : x
  2. Step 2: Convert to fraction form
    611,777.97/917,760.23 = 312,095.07/x
  3. Step 3: Cross multiply
    611,777.97x = 917,760.23 × 312,095.07
  4. Step 4: Simplify right side
    611,777.97x = 286,428,443,225.07
  5. Step 5: Solve for x
    x = 286,428,443,225.07/611,777.97
  6. Step 6: Final answer
    x = 468,190.19

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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.