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Finding the Fourth Proportional to 712,486,722.85, 1,068,730,084.28 and 712,486,722.85

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Solution

The fourth proportional to 712,486,722.85, 1,068,730,084.28 and 712,486,722.85 is: 1,068,730,084.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,486,722.85 : 1,068,730,084.28 = 712,486,722.85 : x
  2. Step 2: Convert to fraction form
    712,486,722.85/1,068,730,084.28 = 712,486,722.85/x
  3. Step 3: Cross multiply
    712,486,722.85x = 1,068,730,084.28 × 712,486,722.85
  4. Step 4: Simplify right side
    712,486,722.85x = 761,455,995,356,299,136
  5. Step 5: Solve for x
    x = 761,455,995,356,299,136/712,486,722.85
  6. Step 6: Final answer
    x = 1,068,730,084.28

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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.