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Finding the Fourth Proportional to 14,916,248.40, 20,939,434.80 and 14,916,248.40

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Solution

The fourth proportional to 14,916,248.40, 20,939,434.80 and 14,916,248.40 is: 20,939,434.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,916,248.40 : 20,939,434.80 = 14,916,248.40 : x
  2. Step 2: Convert to fraction form
    14,916,248.40/20,939,434.80 = 14,916,248.40/x
  3. Step 3: Cross multiply
    14,916,248.40x = 20,939,434.80 × 14,916,248.40
  4. Step 4: Simplify right side
    14,916,248.40x = 312,337,810,832,404.31
  5. Step 5: Solve for x
    x = 312,337,810,832,404.31/14,916,248.40
  6. Step 6: Final answer
    x = 20,939,434.80

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.