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Finding the Fourth Proportional to 70,402,463.52, 105,603,779.52 and 19,284,923.04

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Solution

The fourth proportional to 70,402,463.52, 105,603,779.52 and 19,284,923.04 is: 28,927,407.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,402,463.52 : 105,603,779.52 = 19,284,923.04 : x
  2. Step 2: Convert to fraction form
    70,402,463.52/105,603,779.52 = 19,284,923.04/x
  3. Step 3: Cross multiply
    70,402,463.52x = 105,603,779.52 × 19,284,923.04
  4. Step 4: Simplify right side
    70,402,463.52x = 2,036,560,760,776,328
  5. Step 5: Solve for x
    x = 2,036,560,760,776,328/70,402,463.52
  6. Step 6: Final answer
    x = 28,927,407.64

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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.