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Finding the Fourth Proportional to 912,133.92, 1,259,100 and 816,475.20

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Solution

The fourth proportional to 912,133.92, 1,259,100 and 816,475.20 is: 1,127,053.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,133.92 : 1,259,100 = 816,475.20 : x
  2. Step 2: Convert to fraction form
    912,133.92/1,259,100 = 816,475.20/x
  3. Step 3: Cross multiply
    912,133.92x = 1,259,100 × 816,475.20
  4. Step 4: Simplify right side
    912,133.92x = 1,028,023,924,320
  5. Step 5: Solve for x
    x = 1,028,023,924,320/912,133.92
  6. Step 6: Final answer
    x = 1,127,053.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.