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Finding the Fourth Proportional to 586,904.71, 809,913.89 and 328,779.95

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Solution

The fourth proportional to 586,904.71, 809,913.89 and 328,779.95 is: 453,708.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,904.71 : 809,913.89 = 328,779.95 : x
  2. Step 2: Convert to fraction form
    586,904.71/809,913.89 = 328,779.95/x
  3. Step 3: Cross multiply
    586,904.71x = 809,913.89 × 328,779.95
  4. Step 4: Simplify right side
    586,904.71x = 266,283,448,258.51
  5. Step 5: Solve for x
    x = 266,283,448,258.51/586,904.71
  6. Step 6: Final answer
    x = 453,708.15

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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.