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Finding the Fourth Proportional to 187,212,316.80, 280,314,590.40 and 187,212,316.80

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Solution

The fourth proportional to 187,212,316.80, 280,314,590.40 and 187,212,316.80 is: 280,314,590.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,212,316.80 : 280,314,590.40 = 187,212,316.80 : x
  2. Step 2: Convert to fraction form
    187,212,316.80/280,314,590.40 = 187,212,316.80/x
  3. Step 3: Cross multiply
    187,212,316.80x = 280,314,590.40 × 187,212,316.80
  4. Step 4: Simplify right side
    187,212,316.80x = 52,478,343,901,627,040
  5. Step 5: Solve for x
    x = 52,478,343,901,627,040/187,212,316.80
  6. Step 6: Final answer
    x = 280,314,590.40

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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.