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Finding the Fourth Proportional to 72,425,111.10, 108,637,666.65 and 72,425,111.10

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Solution

The fourth proportional to 72,425,111.10, 108,637,666.65 and 72,425,111.10 is: 108,637,666.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,425,111.10 : 108,637,666.65 = 72,425,111.10 : x
  2. Step 2: Convert to fraction form
    72,425,111.10/108,637,666.65 = 72,425,111.10/x
  3. Step 3: Cross multiply
    72,425,111.10x = 108,637,666.65 × 72,425,111.10
  4. Step 4: Simplify right side
    72,425,111.10x = 7,868,095,076,771,015
  5. Step 5: Solve for x
    x = 7,868,095,076,771,015/72,425,111.10
  6. Step 6: Final answer
    x = 108,637,666.65

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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.