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Finding the Fourth Proportional to 74,887,256.80, 105,144,490.40 and 74,887,256.80

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Solution

The fourth proportional to 74,887,256.80, 105,144,490.40 and 74,887,256.80 is: 105,144,490.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,887,256.80 : 105,144,490.40 = 74,887,256.80 : x
  2. Step 2: Convert to fraction form
    74,887,256.80/105,144,490.40 = 74,887,256.80/x
  3. Step 3: Cross multiply
    74,887,256.80x = 105,144,490.40 × 74,887,256.80
  4. Step 4: Simplify right side
    74,887,256.80x = 7,873,982,453,689,935
  5. Step 5: Solve for x
    x = 7,873,982,453,689,935/74,887,256.80
  6. Step 6: Final answer
    x = 105,144,490.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.