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Finding the Fourth Proportional to 289,037.36, 433,448.40 and 99,444.80

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Solution

The fourth proportional to 289,037.36, 433,448.40 and 99,444.80 is: 149,130.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,037.36 : 433,448.40 = 99,444.80 : x
  2. Step 2: Convert to fraction form
    289,037.36/433,448.40 = 99,444.80/x
  3. Step 3: Cross multiply
    289,037.36x = 433,448.40 × 99,444.80
  4. Step 4: Simplify right side
    289,037.36x = 43,104,189,448.32
  5. Step 5: Solve for x
    x = 43,104,189,448.32/289,037.36
  6. Step 6: Final answer
    x = 149,130.17

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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.