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Finding the Fourth Proportional to 62,547.84, 93,830.40 and 21,006.72

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Solution

The fourth proportional to 62,547.84, 93,830.40 and 21,006.72 is: 31,512.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,547.84 : 93,830.40 = 21,006.72 : x
  2. Step 2: Convert to fraction form
    62,547.84/93,830.40 = 21,006.72/x
  3. Step 3: Cross multiply
    62,547.84x = 93,830.40 × 21,006.72
  4. Step 4: Simplify right side
    62,547.84x = 1,971,068,940.29
  5. Step 5: Solve for x
    x = 1,971,068,940.29/62,547.84
  6. Step 6: Final answer
    x = 31,512.98

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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.