Home / 10,552,816.40-15,779,458.20-7,865,430.80

Finding the Fourth Proportional to 10,552,816.40, 15,779,458.20 and 7,865,430.80

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Solution

The fourth proportional to 10,552,816.40, 15,779,458.20 and 7,865,430.80 is: 11,761,053.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,552,816.40 : 15,779,458.20 = 7,865,430.80 : x
  2. Step 2: Convert to fraction form
    10,552,816.40/15,779,458.20 = 7,865,430.80/x
  3. Step 3: Cross multiply
    10,552,816.40x = 15,779,458.20 × 7,865,430.80
  4. Step 4: Simplify right side
    10,552,816.40x = 124,112,236,533,592.55
  5. Step 5: Solve for x
    x = 124,112,236,533,592.55/10,552,816.40
  6. Step 6: Final answer
    x = 11,761,053.34

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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.