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Finding the Fourth Proportional to 9,927,188.40, 14,893,547.40 and 4,878,663.60

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Solution

The fourth proportional to 9,927,188.40, 14,893,547.40 and 4,878,663.60 is: 7,319,354.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,927,188.40 : 14,893,547.40 = 4,878,663.60 : x
  2. Step 2: Convert to fraction form
    9,927,188.40/14,893,547.40 = 4,878,663.60/x
  3. Step 3: Cross multiply
    9,927,188.40x = 14,893,547.40 × 4,878,663.60
  4. Step 4: Simplify right side
    9,927,188.40x = 72,660,607,575,254.64
  5. Step 5: Solve for x
    x = 72,660,607,575,254.64/9,927,188.40
  6. Step 6: Final answer
    x = 7,319,354.15

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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.