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Finding the Fourth Proportional to 57,938,687.80, 86,908,031.70 and 48,585,326.20

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Solution

The fourth proportional to 57,938,687.80, 86,908,031.70 and 48,585,326.20 is: 72,877,989.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,938,687.80 : 86,908,031.70 = 48,585,326.20 : x
  2. Step 2: Convert to fraction form
    57,938,687.80/86,908,031.70 = 48,585,326.20/x
  3. Step 3: Cross multiply
    57,938,687.80x = 86,908,031.70 × 48,585,326.20
  4. Step 4: Simplify right side
    57,938,687.80x = 4,222,455,069,544,441
  5. Step 5: Solve for x
    x = 4,222,455,069,544,441/57,938,687.80
  6. Step 6: Final answer
    x = 72,877,989.30

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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.