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Finding the Fourth Proportional to 35,985,655.20, 53,978,482.80 and 10,427,498.40

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Solution

The fourth proportional to 35,985,655.20, 53,978,482.80 and 10,427,498.40 is: 15,641,247.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,985,655.20 : 53,978,482.80 = 10,427,498.40 : x
  2. Step 2: Convert to fraction form
    35,985,655.20/53,978,482.80 = 10,427,498.40/x
  3. Step 3: Cross multiply
    35,985,655.20x = 53,978,482.80 × 10,427,498.40
  4. Step 4: Simplify right side
    35,985,655.20x = 562,860,543,031,427.50
  5. Step 5: Solve for x
    x = 562,860,543,031,427.50/35,985,655.20
  6. Step 6: Final answer
    x = 15,641,247.60

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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.