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Finding the Fourth Proportional to 65,663,623.80, 98,495,435.70 and 20,219,513.40

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Solution

The fourth proportional to 65,663,623.80, 98,495,435.70 and 20,219,513.40 is: 30,329,270.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,663,623.80 : 98,495,435.70 = 20,219,513.40 : x
  2. Step 2: Convert to fraction form
    65,663,623.80/98,495,435.70 = 20,219,513.40/x
  3. Step 3: Cross multiply
    65,663,623.80x = 98,495,435.70 × 20,219,513.40
  4. Step 4: Simplify right side
    65,663,623.80x = 1,991,529,781,974,988.25
  5. Step 5: Solve for x
    x = 1,991,529,781,974,988.25/65,663,623.80
  6. Step 6: Final answer
    x = 30,329,270.10

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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.