Home / 128,769,128.80-177,699,680.48-70,030,529.76

Finding the Fourth Proportional to 128,769,128.80, 177,699,680.48 and 70,030,529.76

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Solution

The fourth proportional to 128,769,128.80, 177,699,680.48 and 70,030,529.76 is: 96,641,197.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,769,128.80 : 177,699,680.48 = 70,030,529.76 : x
  2. Step 2: Convert to fraction form
    128,769,128.80/177,699,680.48 = 70,030,529.76/x
  3. Step 3: Cross multiply
    128,769,128.80x = 177,699,680.48 × 70,030,529.76
  4. Step 4: Simplify right side
    128,769,128.80x = 12,444,402,762,197,132
  5. Step 5: Solve for x
    x = 12,444,402,762,197,132/128,769,128.80
  6. Step 6: Final answer
    x = 96,641,197.14

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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.