Home / 129,291,206.52-178,425,657.54-70,557,664.32

Finding the Fourth Proportional to 129,291,206.52, 178,425,657.54 and 70,557,664.32

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Solution

The fourth proportional to 129,291,206.52, 178,425,657.54 and 70,557,664.32 is: 97,371,646.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,291,206.52 : 178,425,657.54 = 70,557,664.32 : x
  2. Step 2: Convert to fraction form
    129,291,206.52/178,425,657.54 = 70,557,664.32/x
  3. Step 3: Cross multiply
    129,291,206.52x = 178,425,657.54 × 70,557,664.32
  4. Step 4: Simplify right side
    129,291,206.52x = 12,589,297,650,782,596
  5. Step 5: Solve for x
    x = 12,589,297,650,782,596/129,291,206.52
  6. Step 6: Final answer
    x = 97,371,646.45

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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.