Home / 86,283,611.60-129,425,417.40-78,473,397.20

Finding the Fourth Proportional to 86,283,611.60, 129,425,417.40 and 78,473,397.20

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Solution

The fourth proportional to 86,283,611.60, 129,425,417.40 and 78,473,397.20 is: 117,710,095.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,283,611.60 : 129,425,417.40 = 78,473,397.20 : x
  2. Step 2: Convert to fraction form
    86,283,611.60/129,425,417.40 = 78,473,397.20/x
  3. Step 3: Cross multiply
    86,283,611.60x = 129,425,417.40 × 78,473,397.20
  4. Step 4: Simplify right side
    86,283,611.60x = 10,156,452,187,405,992
  5. Step 5: Solve for x
    x = 10,156,452,187,405,992/86,283,611.60
  6. Step 6: Final answer
    x = 117,710,095.80

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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.