Home / 128,009,963.52-176,610,505.86-83,335,593.74

Finding the Fourth Proportional to 128,009,963.52, 176,610,505.86 and 83,335,593.74

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Solution

The fourth proportional to 128,009,963.52, 176,610,505.86 and 83,335,593.74 is: 114,974,967.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,009,963.52 : 176,610,505.86 = 83,335,593.74 : x
  2. Step 2: Convert to fraction form
    128,009,963.52/176,610,505.86 = 83,335,593.74/x
  3. Step 3: Cross multiply
    128,009,963.52x = 176,610,505.86 × 83,335,593.74
  4. Step 4: Simplify right side
    128,009,963.52x = 14,717,941,366,564,850
  5. Step 5: Solve for x
    x = 14,717,941,366,564,850/128,009,963.52
  6. Step 6: Final answer
    x = 114,974,967.27

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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.