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Finding the Fourth Proportional to 621,581,726.40, 930,580,999.20 and 621,581,726.40

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Solution

The fourth proportional to 621,581,726.40, 930,580,999.20 and 621,581,726.40 is: 930,580,999.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,581,726.40 : 930,580,999.20 = 621,581,726.40 : x
  2. Step 2: Convert to fraction form
    621,581,726.40/930,580,999.20 = 621,581,726.40/x
  3. Step 3: Cross multiply
    621,581,726.40x = 930,580,999.20 × 621,581,726.40
  4. Step 4: Simplify right side
    621,581,726.40x = 578,432,144,037,773,056
  5. Step 5: Solve for x
    x = 578,432,144,037,773,056/621,581,726.40
  6. Step 6: Final answer
    x = 930,580,999.20

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1.5x scale

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.