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Finding the Fourth Proportional to 654,686.60, 903,882.59 and 448,300.36

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Solution

The fourth proportional to 654,686.60, 903,882.59 and 448,300.36 is: 618,938.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,686.60 : 903,882.59 = 448,300.36 : x
  2. Step 2: Convert to fraction form
    654,686.60/903,882.59 = 448,300.36/x
  3. Step 3: Cross multiply
    654,686.60x = 903,882.59 × 448,300.36
  4. Step 4: Simplify right side
    654,686.60x = 405,210,887,096.07
  5. Step 5: Solve for x
    x = 405,210,887,096.07/654,686.60
  6. Step 6: Final answer
    x = 618,938.72

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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.