Home / 199,685,761.80-299,386,925.10-76,816,602.60

Finding the Fourth Proportional to 199,685,761.80, 299,386,925.10 and 76,816,602.60

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Solution

The fourth proportional to 199,685,761.80, 299,386,925.10 and 76,816,602.60 is: 115,170,386.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,685,761.80 : 299,386,925.10 = 76,816,602.60 : x
  2. Step 2: Convert to fraction form
    199,685,761.80/299,386,925.10 = 76,816,602.60/x
  3. Step 3: Cross multiply
    199,685,761.80x = 299,386,925.10 × 76,816,602.60
  4. Step 4: Simplify right side
    199,685,761.80x = 22,997,886,449,042,664
  5. Step 5: Solve for x
    x = 22,997,886,449,042,664/199,685,761.80
  6. Step 6: Final answer
    x = 115,170,386.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.