Home / 127,871,999.60-191,807,999.40-76,811,673.20

Finding the Fourth Proportional to 127,871,999.60, 191,807,999.40 and 76,811,673.20

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Solution

The fourth proportional to 127,871,999.60, 191,807,999.40 and 76,811,673.20 is: 115,217,509.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,871,999.60 : 191,807,999.40 = 76,811,673.20 : x
  2. Step 2: Convert to fraction form
    127,871,999.60/191,807,999.40 = 76,811,673.20/x
  3. Step 3: Cross multiply
    127,871,999.60x = 191,807,999.40 × 76,811,673.20
  4. Step 4: Simplify right side
    127,871,999.60x = 14,733,093,367,058,598
  5. Step 5: Solve for x
    x = 14,733,093,367,058,598/127,871,999.60
  6. Step 6: Final answer
    x = 115,217,509.80

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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.