Home / 128,158,861.35-176,860,077.89-69,421,526.46

Finding the Fourth Proportional to 128,158,861.35, 176,860,077.89 and 69,421,526.46

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Solution

The fourth proportional to 128,158,861.35, 176,860,077.89 and 69,421,526.46 is: 95,802,166.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,158,861.35 : 176,860,077.89 = 69,421,526.46 : x
  2. Step 2: Convert to fraction form
    128,158,861.35/176,860,077.89 = 69,421,526.46/x
  3. Step 3: Cross multiply
    128,158,861.35x = 176,860,077.89 × 69,421,526.46
  4. Step 4: Simplify right side
    128,158,861.35x = 12,277,896,576,611,186
  5. Step 5: Solve for x
    x = 12,277,896,576,611,186/128,158,861.35
  6. Step 6: Final answer
    x = 95,802,166.52

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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.