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Finding the Fourth Proportional to 9,866,916.66, 14,793,639.69 and 5,256,592.18

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Solution

The fourth proportional to 9,866,916.66, 14,793,639.69 and 5,256,592.18 is: 7,881,300.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,866,916.66 : 14,793,639.69 = 5,256,592.18 : x
  2. Step 2: Convert to fraction form
    9,866,916.66/14,793,639.69 = 5,256,592.18/x
  3. Step 3: Cross multiply
    9,866,916.66x = 14,793,639.69 × 5,256,592.18
  4. Step 4: Simplify right side
    9,866,916.66x = 77,764,130,708,191.61
  5. Step 5: Solve for x
    x = 77,764,130,708,191.61/9,866,916.66
  6. Step 6: Final answer
    x = 7,881,300.04

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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.