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Finding the Fourth Proportional to 124,675.60, 172,045.68 and 68,075.92

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Solution

The fourth proportional to 124,675.60, 172,045.68 and 68,075.92 is: 93,941.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,675.60 : 172,045.68 = 68,075.92 : x
  2. Step 2: Convert to fraction form
    124,675.60/172,045.68 = 68,075.92/x
  3. Step 3: Cross multiply
    124,675.60x = 172,045.68 × 68,075.92
  4. Step 4: Simplify right side
    124,675.60x = 11,712,167,948.03
  5. Step 5: Solve for x
    x = 11,712,167,948.03/124,675.60
  6. Step 6: Final answer
    x = 93,941.14

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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.