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Finding the Fourth Proportional to 56,069,612.80, 83,971,708.80 and 38,020,998.40

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Solution

The fourth proportional to 56,069,612.80, 83,971,708.80 and 38,020,998.40 is: 56,941,506.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,069,612.80 : 83,971,708.80 = 38,020,998.40 : x
  2. Step 2: Convert to fraction form
    56,069,612.80/83,971,708.80 = 38,020,998.40/x
  3. Step 3: Cross multiply
    56,069,612.80x = 83,971,708.80 × 38,020,998.40
  4. Step 4: Simplify right side
    56,069,612.80x = 3,192,688,205,930,065.50
  5. Step 5: Solve for x
    x = 3,192,688,205,930,065.50/56,069,612.80
  6. Step 6: Final answer
    x = 56,941,506.22

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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.