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Finding the Fourth Proportional to 58,718.80, 88,085.40 and 19,265.20

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Solution

The fourth proportional to 58,718.80, 88,085.40 and 19,265.20 is: 28,900.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,718.80 : 88,085.40 = 19,265.20 : x
  2. Step 2: Convert to fraction form
    58,718.80/88,085.40 = 19,265.20/x
  3. Step 3: Cross multiply
    58,718.80x = 88,085.40 × 19,265.20
  4. Step 4: Simplify right side
    58,718.80x = 1,696,982,848.08
  5. Step 5: Solve for x
    x = 1,696,982,848.08/58,718.80
  6. Step 6: Final answer
    x = 28,900.16

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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.