Home / 191,000,999.20-286,501,498.80-68,238,128.20

Finding the Fourth Proportional to 191,000,999.20, 286,501,498.80 and 68,238,128.20

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Solution

The fourth proportional to 191,000,999.20, 286,501,498.80 and 68,238,128.20 is: 102,357,192.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,000,999.20 : 286,501,498.80 = 68,238,128.20 : x
  2. Step 2: Convert to fraction form
    191,000,999.20/286,501,498.80 = 68,238,128.20/x
  3. Step 3: Cross multiply
    191,000,999.20x = 286,501,498.80 × 68,238,128.20
  4. Step 4: Simplify right side
    191,000,999.20x = 19,550,326,004,606,548
  5. Step 5: Solve for x
    x = 19,550,326,004,606,548/191,000,999.20
  6. Step 6: Final answer
    x = 102,357,192.30

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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.