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Finding the Fourth Proportional to 86,893,808.40, 130,004,789.40 and 56,660,720.40

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Solution

The fourth proportional to 86,893,808.40, 130,004,789.40 and 56,660,720.40 is: 84,772,035.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,893,808.40 : 130,004,789.40 = 56,660,720.40 : x
  2. Step 2: Convert to fraction form
    86,893,808.40/130,004,789.40 = 56,660,720.40/x
  3. Step 3: Cross multiply
    86,893,808.40x = 130,004,789.40 × 56,660,720.40
  4. Step 4: Simplify right side
    86,893,808.40x = 7,366,165,022,854,284
  5. Step 5: Solve for x
    x = 7,366,165,022,854,284/86,893,808.40
  6. Step 6: Final answer
    x = 84,772,035.64

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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.