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Finding the Fourth Proportional to 615,579,425,140.80, 921,899,809,634.40 and 615,579,425,140.80

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Solution

The fourth proportional to 615,579,425,140.80, 921,899,809,634.40 and 615,579,425,140.80 is: 921,899,809,634.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,579,425,140.80 : 921,899,809,634.40 = 615,579,425,140.80 : x
  2. Step 2: Convert to fraction form
    615,579,425,140.80/921,899,809,634.40 = 615,579,425,140.80/x
  3. Step 3: Cross multiply
    615,579,425,140.80x = 921,899,809,634.40 × 615,579,425,140.80
  4. Step 4: Simplify right side
    615,579,425,140.80x = 567,502,554,852,156,944,416,768
  5. Step 5: Solve for x
    x = 567,502,554,852,156,944,416,768/615,579,425,140.80
  6. Step 6: Final answer
    x = 921,899,809,634.40

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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.