Home / 128,185,786.51-176,896,146.05-69,449,911.45

Finding the Fourth Proportional to 128,185,786.51, 176,896,146.05 and 69,449,911.45

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Solution

The fourth proportional to 128,185,786.51, 176,896,146.05 and 69,449,911.45 is: 95,840,748.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,185,786.51 : 176,896,146.05 = 69,449,911.45 : x
  2. Step 2: Convert to fraction form
    128,185,786.51/176,896,146.05 = 69,449,911.45/x
  3. Step 3: Cross multiply
    128,185,786.51x = 176,896,146.05 × 69,449,911.45
  4. Step 4: Simplify right side
    128,185,786.51x = 12,285,421,678,671,518
  5. Step 5: Solve for x
    x = 12,285,421,678,671,518/128,185,786.51
  6. Step 6: Final answer
    x = 95,840,748.13

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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.