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Finding the Fourth Proportional to 448,035.40, 672,038.70 and 148,529.80

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Solution

The fourth proportional to 448,035.40, 672,038.70 and 148,529.80 is: 222,789.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,035.40 : 672,038.70 = 148,529.80 : x
  2. Step 2: Convert to fraction form
    448,035.40/672,038.70 = 148,529.80/x
  3. Step 3: Cross multiply
    448,035.40x = 672,038.70 × 148,529.80
  4. Step 4: Simplify right side
    448,035.40x = 99,817,773,703.26
  5. Step 5: Solve for x
    x = 99,817,773,703.26/448,035.40
  6. Step 6: Final answer
    x = 222,789.93

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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.