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Finding the Fourth Proportional to 330,666.54, 456,355.47 and 187,411.20

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Solution

The fourth proportional to 330,666.54, 456,355.47 and 187,411.20 is: 258,647.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,666.54 : 456,355.47 = 187,411.20 : x
  2. Step 2: Convert to fraction form
    330,666.54/456,355.47 = 187,411.20/x
  3. Step 3: Cross multiply
    330,666.54x = 456,355.47 × 187,411.20
  4. Step 4: Simplify right side
    330,666.54x = 85,526,126,259.26
  5. Step 5: Solve for x
    x = 85,526,126,259.26/330,666.54
  6. Step 6: Final answer
    x = 258,647.66

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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.