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Finding the Fourth Proportional to 266,562,264.80, 399,871,390.80 and 84,767,160.80

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Solution

The fourth proportional to 266,562,264.80, 399,871,390.80 and 84,767,160.80 is: 127,159,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,562,264.80 : 399,871,390.80 = 84,767,160.80 : x
  2. Step 2: Convert to fraction form
    266,562,264.80/399,871,390.80 = 84,767,160.80/x
  3. Step 3: Cross multiply
    266,562,264.80x = 399,871,390.80 × 84,767,160.80
  4. Step 4: Simplify right side
    266,562,264.80x = 33,895,962,483,263,240
  5. Step 5: Solve for x
    x = 33,895,962,483,263,240/266,562,264.80
  6. Step 6: Final answer
    x = 127,159,643.20

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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.