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Finding the Fourth Proportional to 402,886,386.20, 604,329,579.30 and 402,886,386.20

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Solution

The fourth proportional to 402,886,386.20, 604,329,579.30 and 402,886,386.20 is: 604,329,579.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,886,386.20 : 604,329,579.30 = 402,886,386.20 : x
  2. Step 2: Convert to fraction form
    402,886,386.20/604,329,579.30 = 402,886,386.20/x
  3. Step 3: Cross multiply
    402,886,386.20x = 604,329,579.30 × 402,886,386.20
  4. Step 4: Simplify right side
    402,886,386.20x = 243,476,160,277,943,296
  5. Step 5: Solve for x
    x = 243,476,160,277,943,296/402,886,386.20
  6. Step 6: Final answer
    x = 604,329,579.30

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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.