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Finding the Fourth Proportional to 611,544,603.40, 858,581,091.80 and 611,544,603.40

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Solution

The fourth proportional to 611,544,603.40, 858,581,091.80 and 611,544,603.40 is: 858,581,091.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,544,603.40 : 858,581,091.80 = 611,544,603.40 : x
  2. Step 2: Convert to fraction form
    611,544,603.40/858,581,091.80 = 611,544,603.40/x
  3. Step 3: Cross multiply
    611,544,603.40x = 858,581,091.80 × 611,544,603.40
  4. Step 4: Simplify right side
    611,544,603.40x = 525,060,633,271,569,920
  5. Step 5: Solve for x
    x = 525,060,633,271,569,920/611,544,603.40
  6. Step 6: Final answer
    x = 858,581,091.80

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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.