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Finding the Fourth Proportional to 68,902,686.80, 103,354,030.20 and 59,549,325.20

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Solution

The fourth proportional to 68,902,686.80, 103,354,030.20 and 59,549,325.20 is: 89,323,987.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,902,686.80 : 103,354,030.20 = 59,549,325.20 : x
  2. Step 2: Convert to fraction form
    68,902,686.80/103,354,030.20 = 59,549,325.20/x
  3. Step 3: Cross multiply
    68,902,686.80x = 103,354,030.20 × 59,549,325.20
  4. Step 4: Simplify right side
    68,902,686.80x = 6,154,662,755,110,422
  5. Step 5: Solve for x
    x = 6,154,662,755,110,422/68,902,686.80
  6. Step 6: Final answer
    x = 89,323,987.80

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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.