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Finding the Fourth Proportional to 117,140,017.80, 175,710,026.70 and 86,906,929.80

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Solution

The fourth proportional to 117,140,017.80, 175,710,026.70 and 86,906,929.80 is: 130,360,394.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,140,017.80 : 175,710,026.70 = 86,906,929.80 : x
  2. Step 2: Convert to fraction form
    117,140,017.80/175,710,026.70 = 86,906,929.80/x
  3. Step 3: Cross multiply
    117,140,017.80x = 175,710,026.70 × 86,906,929.80
  4. Step 4: Simplify right side
    117,140,017.80x = 15,270,418,955,573,024
  5. Step 5: Solve for x
    x = 15,270,418,955,573,024/117,140,017.80
  6. Step 6: Final answer
    x = 130,360,394.70

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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.