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Finding the Fourth Proportional to 125,113, 172,655.94 and 68,526.40

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Solution

The fourth proportional to 125,113, 172,655.94 and 68,526.40 is: 94,566.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,113 : 172,655.94 = 68,526.40 : x
  2. Step 2: Convert to fraction form
    125,113/172,655.94 = 68,526.40/x
  3. Step 3: Cross multiply
    125,113x = 172,655.94 × 68,526.40
  4. Step 4: Simplify right side
    125,113x = 11,831,490,006.82
  5. Step 5: Solve for x
    x = 11,831,490,006.82/125,113
  6. Step 6: Final answer
    x = 94,566.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.